Flap nap

When a person preforms cunnilingus on a woman and falls asleep halfway through, without the knowlege of the woman. The resulting snores against the vulva and labia (both mayora and minora) create a flaping action that proves to be more pleasurable for the woman than the actual intended act of cunnilingus. Unbeknownst to the woman, her partner is asleep and isn't even trying.