penny whistle
noun: An act of fellatio performed upon a man whilst he is defecating. NOTE: If the man is defecating whilst seated upon a toilet, this act is instead known as a blumpkin.
So me and my girl was out camping right? And I had to shit y'know, so I goes out into the woods, and outta nowhere my girl shows up and starts giving me a penny whistle. It was pretty rad I guess.