Placing of one's face firmly between another's ass cheeks, and then vigorously shaking ones head while bellowing into the abyss thus producing a "motoring" sound!
While getting freaky Marshall started moonboating Abigail's butt.
Downing a bottle of Pepto Busmoul on Friday after work. Then drinking rot gut and eating only extremely spicy food for all your meals. Then come Monday down a bottle of laxatives, and destroy the communal toilet while at work.
Charlie's plan for the weekend was to commit to pulling off the angry phoenix for monday!
The act of promiscuous anal sex while the receiver has explosive diarrhea.
While out on an adventure, Van began exhibiting signs of having terrible diarrhea. Marshall decided to make the best of the situation and go bog trotting on Van.
Considered foreplay, one straps a dildo onto their face or forehead, then proceeds to furiously thrash their head in a up/down motion in their partners nether regions.
While getting frisky with Hermione, Ron put the strap-on onto his face and gave her the Dirty Unicorn !
When you go down on your partner, and after exploring their nether regents, you resurface and have remnants of their caverns in your beard.
After going down on my woman, I came back up with dingleberry beard!