FIFN 

Fuck it for now

dave: How about mail and that kind of shizzle?
lars: FIFN!
dave: ok

FIFN by lfat December 9, 2009

fifner 

An absolute god, the best person you will ever find. The other definition is bullshit

Wow look its Fifner the best person ever

fifner by TwtFer June 21, 2021

fifnight 

fortnight is 14 nights
so fifnight shall be 15 nights.

wow
that's underwhelming
so fifnight would be in 15 days
- SeBi0306 (酒人)#1685

fifnight by ArMor007 July 24, 2021