Male masturbation: from the root verb fwap (onomatapoeic). Derived from the Old English "fwappen", cog. with Old Dutch "vrappen", "to knock" (cf. English "rap" as in "rappping one's knuckles").
Did you see Baywatch last night? That
bit with the slo-mo jubblies induced some serious fwappage, I can tell you!
the soft fleshy flap o' skin that hangs down from the upper arms of old people and shimmers and shakes under the slightest movement of the rest of the body
Did you see Jagger's Biceptual Flappage on the Superbowl XL half timeshow?
Lets say a group of lads standing outside a.... i dont know, a tyre Warehouse saw a fit lass walking past, they might say "check out the flappage"in order to bring everyones attention to the fit lass.
Or you could say, "i got some bwad flappage last night" meaning you had some vinga action.
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.