Intercourse in devotion to the Ogrelord Shrek. Can include ogrely wet, bloody soppy dildos,multiple strap-ons, little children getting corn dogged in the urethra, the credit-carding of infants, getting fingered to the point of a bloody orgasm, the use of purple-tinted ejaculates in the hopes of acheiving shrekkish orgasm, penetrating a green swamp slug of slimy beauty, the anal fistish rape of a giant sperm cell, a skull fuck shishkabob, an alaskan firedragon with a colossal ogre cock, etc., etc. ...
drek 1: i caught a view of my goat-wife involved is unlawful shrex with a bloody urethra cock and I, myself snorted in-derisively
Shrek: WHAT ARE YOU DOING IN MY SWAMP?! *sand paper bareback fuck with tiny teen anal first timer*
The act of having sex after having consumed psychedelic mushrooms, or "'shrooms".
'Shrooms + sex = shrex
"Martha and I went to her family's cabin for the weekend. She talked a lot about how nature inspires her visual merchandising strategies, but then drank mushroom tea, smokedjoint, and had interstellar shrex for four hours. It was insane. It was way hard to bust, though."