To grow steadily and predictably, but still managing to get out of hand and unmanageable.
You know... I know she's my step sister, but the feelings I felt were groeling and sooner or later...
by Dude with Coffee September 14, 2008
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
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