Spreading of the anus by means of both hands, placed wrist deep inside and forced outwards horizontally. Synonyms include "Black Holing", "Deep Sea Diving", "Opening the Saloon", "The Jaws of Life", or "Swimming the Chocolate River".
Parting the red sea could mean several things, but the definition that people seem to use the most refers to when someone eats out a girl while she's on her period
Wow....I wanted to do some in and out tonight...but since it's the week of my parting of the red sea....I'll just stay home with my ZX2000 instead of going to Le trapeze
The act of having sex with a women when she is on her period. This primarily involves people who are very horny and/or drunk.
Brice- "Dude, I got so stoned and was partying the red seaall night."
Noah- "Same dude. I was there. There was SOO MUCH BLOOD!"
Zoë- "Yea there was.... sorry bout that..."
Noah- *shutters*