Touch me to lag yourself! Script

tbrick = Instance.new("Part")
    tbrick.Parent = workspace
    tbrick.Name = "IMTRIGGERED"
    tbrick.Size = Vector3.new(3,2,1)
    tbrick.Position = Vector3.new(math.random(-300,300),math.random(28,40),math.random(-300,300))
    tbrick.Material = "Pebble"
    tbrick.BrickColor = BrickColor.new("White")
    rt = Instance.new("Decal")
    rt.Parent = tbrick
    rt.Texture = "http://www.roblox.com/asset/?id=1015432183"
    function touchy(hit)
    if hit.Parent:FindFirstChild("Humanoid") then
        local scream = Instance.new("Sound")
        scream.Parent = tbrick
        scream.SoundId = "rbxassetid://606862847"
        scream:Play()
        wait(1)
        scream:Destroy()
        local explode = Instance.new("Explosion")
        explode.Parent = tbrick
        explode.Position = tbrick.Position
        local sound = Instance.new("Sound")
        sound.Parent = tbrick
        sound.SoundId = "rbxassetid://133680244"
        sound:Play()
        wait(10)
        sound:Destroy()
    end
end
tbrick.Touched:connect(touchy)