I got a fun little story from a party I attended last night (NYE).
The party I attended was a sort of underground rave/kink friendly party with music, fire spinning, and drugs run by a local "burning man" affiliated group in my city. Lots of scantily clad women (and men) and large dancefloors both inside and outside of a warehouse-esque space. At one point in the evening, I was looking around just taking in the "sights" when I witnessed (I think) something peculiar. A couple was interacting near the dancefloor, making out a bit and just holding each other close. The girl was particularly curvy and had a similar build/outfit as this, with a belt on the jeans:
(screen capture of a lmbb stuffing vid) Possibly a different colored shirt, but that's besides the point. You get the image in your head.
Anyway, I was just admiring her for a few seconds when the guy she was with grabbed ahold of the belt and kinda shook her, making her belly/torso jiggle a bit. The girl almost seemed to blush in emarassment. They seemed to say something to one another and then continued to make out.
After witnessing this, I built a story in my head that he was teasing her about gaining weight and her outfit being a bit tight. Regardless of whether he was actually her feeder of just admirer of her chub or none of the above, it was an interesting situation to witness. Possible FA interaction out in the wild.