Why won't these functions execute?

I was making a script, but when I say to execute a function when a certain key is pressed, nothing happens. Also - don't say I should switch to RemoteEvents instead of KeyDown, because RemoteEvents are just awful... Here is the script:

wait(0.1)

local player = game.Players.LocalPlayer
local char = player.Character
local mouse = player:GetMouse()

local s1 = false
local s2 = false

ssj = false

function ssj()
    char.Torso.Anchored = true
    if ssj == false then ssj = true print("SSJ was false.") end
    delay(0, function()
        spawn(function()
            spawn(function()
                for i = 1, 25 do
                    local dust = Instance.new("Part", char.Torso)
                    dust.Anchored = true
                    dust.CanCollide = false
                    dust.Transparency = 0.5
                    dust.BrickColor = BrickColor.Yellow()
                    local dustmesh = Instance.new("SpecialMesh", dust)
                    dustmesh.MeshType = "FileMesh"
                    dustmesh.MeshId = "http://www.roblox.com/asset/?id=20329976"
                    dustmesh.Scale = Vector3.new(1,1,1)
                    dust.CFrame = char.Torso.CFrame - Vector3.new(0, 2.5, 0)
                    game.Debris:AddItem(dust, 1)
                    delay(0, function()
                        for i = 1, 20 do
                            dustmesh.Scale = dustmesh.Scale + Vector3.new(3.5, 1.75, 3.5)
                            dust.Transparency = dust.Transparency + 0.05
                            wait(0.1)
                        end
                    end)
                    wait(0.25)
                end
            end)
            s1 = true
        end)
        delay(0, function()
            for i = 1, 25 do
                local ball = Instance.new("Part", char.Torso)
                ball.Anchored = true
                ball.CanCollide = false
                ball.Transparency = 0
                ball.BrickColor = BrickColor.Yellow()
                ball.Shape = "Ball"
                ball.CFrame = char.Torso.CFrame
                ball.TopSurface = "Smooth"
                ball.BottomSurface = "Smooth"
                game.Debris:AddItem(ball, 1)
                delay(0, function()
                    for i = 1, 20 do
                        ball.Size = ball.Size + Vector3.new(2.5, 2.5, 2.5)
                        ball.Transparency = ball.Transparency + 0.05
                        wait(0.1)
                    end
                end)
                wait(0.25)
            end
        end)
        s2 = true
        delay(0, function()
            spawn(function()
                for i = 1, 5 do
                    local spike = Instance.new("Part", char.Torso)
                    spike.Anchored = true
                    spike.CanCollide = false
                    spike.Transparency = 0.5
                    spike.BrickColor = BrickColor.new("Deep orange")
                    spike.CFrame = char.Torso.CFrame
                    local m = Instance.new("SpecialMesh", spike)
                    m.MeshId = "rbxassetid://9982590"
                    game.Debris:AddItem(spike, 1)
                    delay(0,function()
                        for i = 1, 20 do
                            m.Scale = m.Scale + Vector3.new(2,2,2)
                            spike.Transparency = spike.Transparency + 0.05
                            spike.Orientation = spike.Orientation + Vector3.new(math.random(1, 10), math.random(1, 10), math.random(1, 10))
                            wait(0.1)
                        end
                    end)
                    wait(0.53)
                end
            end)
            delay(0,function()
                for i = 1, 12 do
                    local ring = Instance.new("Part", char.Torso)
                    ring.Anchored = true
                    ring.CanCollide = false
                    ring.Transparency = 0.5
                    ring.BrickColor = BrickColor.new("Deep orange")
                    ring.CFrame = char.Torso.CFrame
                    local m = Instance.new("SpecialMesh", ring)
                    m.MeshId = "http://www.roblox.com/asset/?id=3270017"
                    game.Debris:AddItem(ring, 1)
                    delay(0,function()
                        for i = 1, 20 do
                            m.Scale = m.Scale + Vector3.new(12,12,12)
                            ring.Transparency = ring.Transparency + 0.05
                            ring.Orientation = ring.Orientation + Vector3.new(math.random(-25, 25), math.random(-25, 25), math.random(-25, 25))
                            wait(0.25)
                        end
                    end)
                    wait(0.53)
                end
            end)
        end)
    end)
    wait(5)
    local acc = Instance.new("Accessory", char.Head)
    acc.Name = "SSJHair"
    local handle = Instance.new("Part", acc)
    handle.Name = "Handle"
    handle.CanCollide = false
    handle.BrickColor = BrickColor.new("Deep orange")
    handle.Material = "Neon"
    handle.Transparency = 1
    local m = Instance.new("SpecialMesh", handle)
    m.MeshId = "rbxassetid://430344159"
    m.Scale = Vector3.new(6, 6, 6)
    m.Offset = Vector3.new(0, 0.5, 0.5)
    local w = Instance.new("Weld", handle)
    w.Name = "AccessoryWeld"
    w.Part0 = handle
    w.Part1 = char.Head
    w.C0 = CFrame.new(0, -0.5, 0)
    char.Humanoid:AddAccessory(acc)
    for i = 1, 10 do
        handle.Transparency = handle.Transparency - 0.1
        wait(0.025)
    end
    for i, v in pairs(char:GetChildren()) do
        if v:IsA("Accessory") and v.Name ~= "SSJHair" then
            v.Handle.Transparency = 1
        end
    end
    local color1 = Color3.new(255, 255, 0)
    local p = game.ServerStorage.SSJAura:Clone()
    p.Parent = char.Torso
    p.Color = ColorSequence.new(color1)
    local l = Instance.new("ParticleEmitter", char.Torso)
    l.Size = NumberSequence.new({NumberSequenceKeypoint.new(0, 4, 0), NumberSequenceKeypoint.new(1, 4, 0)})
    l.Lifetime = NumberRange.new(0.1)
    l.Rate = 2
    l.Speed = NumberRange.new(2)
    l.VelocitySpread = NumberRange.new(400)
    l.Color = ColorSequence.new(Color3.new(171, 247, 255))
    l.LightEmission = 0.5
    l.Texture = "rbxassetid://281983189"
    local l2 = l:Clone()
    l2.Texture = "rbxassetid://278520320"
    local l3 = l:Clone()
    l3.Texture = "rbxassetid://281983280"
    local l4 = l:Clone()
    l4.Texture = "rbxassetid://281982895"
    local l5 = l:Clone()
    l5.Texture = "rbxassetid://281983242"
    l2.Parent = char.Torso
    l3.Parent = char.Torso
    l4.Parent = char.Torso
    l5.Parent = char.Torso
    s = Instance.new("Sound", char.Torso)
    s.Looped = true
    s.SoundId = "rbxassetid://828214895"
    s:Play()
    wait(4)
    s.TimePosition = 4
    spawn(function()
        while wait(116) and ssj == true do
            s.TimePosition = 4
        end
    end)
    char.Torso.Anchored = false
end

function nossj()
    s:Stop()
    for i, v in pairs(char:GetChildren()) do
        if v:IsA("Accessory") and v.Name ~= "SSJHair" then
            v.Handle.Transparency = 0
        end
    end
    char.SSJHair:Destroy()
    for i, v in pairs(char.Torso:GetChildren()) do
        if v:IsA("ParticleEmitter") then v:Destroy() end
    end
    if ssj == true then ssj = false print("SSJ was true.") end
end

mouse.KeyDown:connect(function(key)
    if string.lower(key) == "h" then
        wait(0.1)
        ssj()
    elseif string.lower(key) == "h" then
        wait(0.1)
        nossj()
    end
end)