Bingo

When you are turdleheading a turd and it dabs / touches your underwear.

Man, I've got to take a crap. If I keep turdleheading, I'll end up bingo stamping my underwear.

Bingo

When you are turdleheading a poop and it dabs/stamps your underwear

Man I've really got to take a crap. I'm really turdleheading. If I don't get to the toilet soon I might bingo my underwear.