glass-bottomed boat 

Defecating onto a piece of plastic wrap held snugly above your lover's face. This provides the view similar to a glass bottomed boat. See also: bradar

Hi lover...you want me to crap on your face? or would you like a glass-bottomed boat today instead? I am feeling dirty...rrrrrr.

glass-bottomed boat by foug December 15, 2003

Glass Bottomed Boat 

This is for poop freaks that might not want to go all the way. Person A (the shitter) and person B (the target a.k.a the person "shat" upon) Person B lays under a glass top coffee table while looking up. Person A takes a dump over the persons face, or other appropriate area of choice. Thus simulating being "pooped on" without all the mess. (I belive the smell could still be an issue)
origin: unknown, though based on glass bottom boats used to watch fish .

"After we scored few lines of coke off my glass topped coffee table, I climbed under it and had my "lover" straddle on top, with her cheeks spread. Her ass opened like the mouth of a lamprey and deposited a big healthy turd over my face. I licked the glass as if I were a fish under a "glass bottomed boat"

Glass Bottomed Boat by Morbog September 27, 2004

glass bottomed boat 

the act of wrapping seran wrap around a partner's head, and then performing the cleveland steamer on the seran wrap.

glass bottomed boat by Anonymous April 15, 2003

glass bottomed boat 

The art of placing cling wrap over your sex partners mouth and pushing it in a bit so that it forms a trough in their mouth. Step 2 is to defecate into the trough and force the turd in. Your partner must then suck the warmth out of the faeces.

A glass bottomed boat is nasty

glass bottomed boat by Agrabarian November 11, 2004