tonky bubble
The name given to a large, sometimes painful buildup of intestinal gas that can accumulate during anal sex while the sphincter is plugged. Historically reserved for the "doe" half of homosexual male couples but in modern times has been applied to gaseous females as well.
Dude, I was all up in this one chick's pipe last night and it was so great, but the then she blapped this nasty tonky bubble and ruined everything.