FUBAR Fountain of Fun
The act of inserting the neck of a bottle of beer into a woman's vagina, and then shaking the bottle. The resulting reaction of removing the bottle will cause the beer to spray all over the place - resulting in the FUBAR (Fucked Up Beyond All Recognition) Fountain of Fun.
Dude, me and Toby were FUBAR last night, and then we did a FUBAR Fountain of Fun with your mom!