a flapster is a drunk mother, or woman over 40, who appears to be possibly a lesbian, but is not accustomed to sexual activity of the sort. it is impossible to see a "lone flapster" as they always come in pairs, or more.
Last night, my mom went to the neighbor's to hang out with her flapster friend. She came home a bit too tipsy.
A condition most often brought about immediately following a rather formidable ejaculatory event.
It will generally cause ones scrotol-sack to appear deflated, flappy and saggy.
The condition typically resolves itself in 8-12 hours once the owner of the flapsack has had the opportunity to replenish his bodily fluids and what not.
Tyrone to his partner: Man homegirl Shwatanquerayray done wore me out bro....she done left me with a flapsack el grande yo.
Lucious in response: Ahhhhh yeeahh homegirl be knowing how to operate her body fo sho. You best get some gatorade or coolade up in ya for the dehydration mane.