How would i add a wait() to this???

local touched = false
local waittime = 120 -- seconds to wait

script.Parent.Touched:connect(function(hit)
    if not touched then --if the debounce variable is false, then
        touched = true --make it true!
        script.Parent.Chaching:play() --plays the sound in the brick
        wait(waittime)  --waits what you put as the variables "waittime" until it can be fired again
    end
    touched = false --make it false again so we can do the if statement again after your waittime
end)

You would have to create a debounce.

You can see one here: http://wiki.roblox.com/index.php?title=Debounce

Basically you would make a debounce.

Debounce in a way disables the script until it needs be used again.

local debounce=false --Making a boolean value to use with debouncing the script
function onTouched(hit)
if debounce==false then -- Checks to see if the debounce is false
debounce=true -- Setting it to true, so if something touches it before the time is up it does nothing
    script.Parent.Chaching:play()
wait(120)
debounce=false -- Setting debounce back to false after 120 seconds so it can be activated again.
end
end
script.Parent.Touched:connect(onTouched)

function onTouched(hit)
    while true do
    script.Parent.Chaching:play()
wait(120)
end
end
script.Parent.Touched:connect(onTouched)