1 definition by Penny Trateshun

porndog

When you have sex with a girl while she is on her period. After you get your (Oscar Mayer) weiner covered in red (ketchup), you stick the meat between her buns.
So you have a weiner, ketchup, and a bun -- the nasty pornstar way.

I gave your sister the porndog last night.

by Penny Trateshun April 18, 2007