A contraction of fucking and rank. Similar in style to fugly. Something is f'rank if it is extremely rancid. Can be used in any situation where expressing your disgust is required.
As I entered the room a f'ranksmell filled my nostrils. Nasty!
What white/Asian people do when they feel uncomfortable.
It starts with a fake laugh, then they shrug their shoulders, shake their head and make a weird face. Sometimes their eyes franticly move around.
Guy 1:"I just told mark he looks like a dyke"
Guy 2:"hahaha wut he say bak to u"
Guy 1:"Nothin, he jus kept doin the F Shake"
"I got your order", "Loud and clear", "over and out" "Fabulous".
A difinitive explanation has never really been found. But, fans of the Thunderbirds all know what I mean