A shart or a shit and a fart combined. Usually happens as a surprise when you thought it was a fart, but a nasty molten mass seeps out.
Friend #1: Holy cow, I gotta fart!
Friend #2: Dude, your fuckin nasty. That sounded pretty wet.
Friend#1: Damn, it was a bubbler!
Friend #2: Need a wet-knap?
Term for a sexual act wherein one sabers the top off a bottle of champagne and then, before pressure is lost, immediately inserts the bottle into the ass of their consenting adult partner.