player = game.Players.firefight101
mouse = player:GetMouse()

function KeyD(key)
	key = key:lower()
	if key == "f" then
		local anim = Instance.new("Animation")
		anim.AnimationId = "rbxassetid://919512313"
		local pee = player.Character.Humanoid:LoadAnimation(anim)
		pee:Play()
	end
end

mouse.KeyDown:connect(KeyD)