A gay couple is traveling on a plane. Let's call them Simon and Brad.
"What if we had sex?" asks Simon. "Are you crazy? Here... on the plane? It would be awkward... everyone would watch us doing it!" "Nobody is even paying attention to anything. Look!"
Simon stands up and asks loudly "Could I have a pencil, please?" Nobody bats an eyelid. Everyone is sleeping, reading, looking out the window, etc.
"They really wouldn't care then, would they?" says Brad. So Simon and Brad have wild sex on the plane.
Later, when the plane arrives to the airport and the people are leaving, the stewardess sees an old man who threw up all over his shirt, even his pants are soaking in the filth.
"Sir, you should've asked for a bag!" "I didn't dare" whispers the old man. "A few rows ahead I saw a man asking for a pencil and he got fucked in the arse..."