attempt to index global 'death' (a function value)?

I'm trying to make a nuke that calls :BreakJoints() on humanoids in game. I keep getting this error though not sure what I'm doing wrong.

13:20:57.457 - Workspace.Brick.Script:23: attempt to index global 'death' (a function value) 13:20:57.457 - Stack Begin 13:20:57.458 - Script 'Workspace.Brick.Script', Line 23 13:20:57.458 - Stack End

function Cough(Part)
local fries = Instance.new('Message')
fries.Parent = game.Workspace
fries.Text = "Hello I will now explode"
wait(3)
fries:Destroy()
local explosion = Instance.new('Part', game.Workspace)
Part = explosion
Part.Anchored = true
Part.Shape = 'Ball'
Part.Transparency = 0.1
Part.TopSurface = "Smooth"
Part.BottomSurface = "Smooth"
Part.CanCollide = false
while true do
Part.Size = Part.Size + Vector3.new(10,10,10)
wait()
end

end
hum = game.Workspace:FindFirstChild("Humanoid")
function death(hum)
	if death.Touched:FindFirstChild(hum)then
		hum:BreakJoints()
		end
end

script.Parent.Touched:connect(Cough)
game.Workspace.Brick.Touched:connect(death)
wait(10)

A function cannot be touched. Instead, a 3D part can be. Also, .Touched is not a property. I am going to rewrite the stuff.

function Cough(Part)
local fries = Instance.new('Message')
fries.Parent = game.Workspace
fries.Text = "Hello I will now explode"
wait(3)
fries:Destroy()
local explosion = Instance.new('Part', game.Workspace)
Part = explosion
Part.Anchored = true
Part.Shape = 'Ball'
Part.Transparency = 0.1
Part.TopSurface = "Smooth"
Part.BottomSurface = "Smooth"
Part.CanCollide = false
while true do
Part.Size = Part.Size + Vector3.new(10,10,10)
wait()
end

end
local deb = false
hum = game.Workspace:FindFirstChild("Humanoid")
function death(hum)
    if hum:FindFirstChild('Humanoid') and deb == false then --I'm assuming you are checking for a humanoid. I'm confused as what you wanted here.
	deb = true
        hum:BreakJoints()
	wait(1)
	deb = false
        end
end

script.Parent.Touched:connect(Cough)
game.Workspace.Brick.Touched:connect(death)
wait(10) --A wait here does nothing, as there is no code after the wait.

the "hum" at line 21 is useless, remove it. the touched event returns the part that touched it. so to check if a player has touched it, and has a humanoid then remove the death function and put this instead:

death = function(part)
	if part.Parent:FindFirstChild"Humanoid" then
		part.Parent.Humanoid:BreakJoints()
	end
end