The violent noises of digestion attempts right before you piss out your ass.
"Dude, did you hear that groel? I'm going to be a while, don't bother to pause the movie."
by incognito August 12, 2004
A stinky, sunflower seed-filled dookie that comes out feeling like you're passing a pinecone (against the grain) with needles stuck in it.
Check out the groel I left in your toilet. (Sorry about the blood.)
by Stizzle Pavizzle September 30, 2003