When a fat woman faints on top of you during sex, and you suffocateeither in boob or armpit.
A: Did you see what they put on Tod's tombstone? B: No what did they put? A: Poor bastard died of a potato pancake may he live for ever in his pleasure of obesity.
When a woman with a flabby ass presses it into your face. This could be done to anally motorboat, perform analingus or cunnilingus. Can be used in both a positive and negative sense.
"How did things with that girl go last night?"
1) "They went well until she gave me the ass potato pancake"
or