butthole smurfing 

Butthole smurfing is where you cram a smurf up your butt.

Very popular at frat parties.

Norm won the butthole smurfing contest with three smurfs.

Getting them out was a whole other thing though.

butthole smurfing by scodder May 31, 2010

butthole surfing 

The act of shaking a carbonated alcoholic beverage and and allowing the liquid to shoot up through the neck of the bottle and into the persons anus. This allows the alcohol enter into the bloodstream faster than oral intake.

"My friend died because of careless butthole surfing."
"You should really stop drinking, butthole surfing is the way to go."

butthole surfing by Kitface May 18, 2007

butthole surfing 

When a dog drags itself across the floor so as to wipe its ass, usually with it's forelegs. May be due to a turd stuck in the butt or general discomfort.

My dog licked his butt so much, he had enough hair in his poop to have a turd hanging off when he came inside. I didn't see it untill he started "butthole surfing" across my new rug. I had to chase him outside and wash that rug. Damn dog.

butthole surfing by The Edgehead June 5, 2009