Flash Friends
A couple who meet and, within minutes, are doing some naked bumping and grinding.
Yo, Dave. I just met this girl Valerie in the kitchen and we became Flash Friends in the bathroom!
friend flash
Noun. An exposure of breast or genitalia by a good friend.
Katie just lifted her shirt to show me her boobs, it was a total friend flash.
420 Flash a Friend Day
On 4/20, in support of marijuana legalization flash a friend (can be done by male or female).
I just saw 2 topless women on 420 flash a friend day in support of legalization!