Scripting debounce/not allowing people to spam?

So, right now I have a script that's functioning really well except for one problem, which is the player can spam the letter Z and it starts to lag the game. I understand it's debounce, but when in the script should I place it, or is there a replacement for debounce that i can put, like wait()? The variable "Ready" I have in my script is the current debounce I have, but it still allows the player to spam Z.

player = game.Players.LocalPlayer 
character = player.CharacterAdded:wait()
humanoid = character:WaitForChild('Humanoid') 
mouse = player:GetMouse() 

goroBall = Instance.new("Part", game.Workspace)
goroBall.Shape = "Ball" 
goroBall.CanCollide = false
goroBall.Material = "Neon" 
goroBall.BrickColor = BrickColor.new("Bright yellow") 
goroBall.Size = Vector3.new(15,15,15) 

uis = game:GetService("UserInputService")

uis.InputBegan:connect(function(input,gpe)
	local Ready = true
	if input.KeyCode == Enum.KeyCode.Z and Ready == true then
		Ready = false 
		for i = 1,5 do
			local goro = goroBall:Clone()
			goro.Parent = game.Workspace
			goro.CFrame = character.Torso.CFrame * CFrame.new(0,0,-15)
			local bv = Instance.new("BodyVelocity")
			bv.MaxForce = Vector3.new(1e8,1e8,1e8)
			bv.Velocity = character.Torso.CFrame.lookVector * 50
			bv.Parent = goro
			Ready = true
		end
    end  
end)