Players tool is only supposed to take tool when he jumps out but isn't. Any help? I accept answers.

So I've been working on this for two straight days and have still yet to figure it out. I've tried multiple codes, they all have failed and have tried others code too. They failed also. I want the players tool to be taken away only when he jumps out of the seat and not the first time he sits in it.

local DeBounce = true

local function takeWeapon(hit)
	local player = game.Players:GetPlayerFromCharacter(hit.Parent)
	print(player)
	local backpack = player.Backpack
	if backpack:FindFirstChild("AssaultRifle")then
		local rocket = backpack:FindFirstChild("AssaultRifle")
		wait(1)
		if backpack == nil then
			rocket:Destroy()
		end
	end
end
script.Parent.TouchEnded:Connect(takeWeapon)

local DeBounce = true

local function takeWeapon(hit)
	local player = game.Players:GetPlayerFromCharacter(hit.Parent)
	local backpack = player.Backpack
	local playerHumanoid = hit.Parent:FindFirstChild("Humanoid")
	wait(.1)
	if playerHumanoid.Sit == false then
		local rocket = backpack:FindFirstChild("AssaultRifle")
		rocket:Destroy()
	end
end
script.Parent.TouchEnded:Connect(takeWeapon)