when you get a tube and stick up your ass to have the other end placed in a girls vagina while you poop into said tube.
wow, i just gave that girl one wicked space port
by kyle the god September 14, 2006
When a guy is doing a chic, then brings/presses his asshole against her vagina, forming an airtight seal, then takes a dump into her vagina. Vapor lock issues are common.
"Man, that was a great Spaceport your gave me the other night; before that, I would have told you that they weren't even physically possible!"
by Pierre Oniongaard October 20, 2006