When a Girl is about to fart whilst a man is performing Oral sex, the man quickly puts his mouth up to her balloon knot, Catches the Flatulence within his mouth, and blows it back into her, all while maintaining a perfect seal against the anus. As he is pulling his lips away, the leftover saliva from his mouth ends up creating a liquid barrier, which the re-inserted gas presses against and maintains perfect surface tension to produce a bubble. The man then winks, and then pops the bubble cheekily. Also called a Ms. or Mrs. Bubbles depending on Gender of the cunnilingus performer, and marital status.
Jimmy gave me a Mr. Bubbles when I told him I wanted him to stop giving me head cause I had Gas.