When an elderly woman has such a plump, round, juicy, fat ass that she cannot perform basic actions with her lower body without producing a loud, ear piericing clapping sound.
"Me and your Nan's juicy, Flappy Clappy made sweet children last night." I say to you
1. You aren't who you say you are.
2. A tall fat person who.
3. Huge Saggy Boobs.
4. A lot of waves at one time hitting the beach.
5. A historic hurricane.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.