Flapagina
Name for the area found on overly obese women under the belly fat and over the fupa.

These two sections of flab form the flapagina. Where the lower belly is one wall of the additional vagina and the fupa forms the other wall.

This would be the area of punchline lore "I caught a flap (now flapagina) on the way down to her pussy"
"That bitch just shook her flapagina at you"
"I was eating her out and she leaned forward and I got caught in her flapagina"
"I was getting ready to stick it in and her flapagina fell on my dick, so I fucked it"