NTFF 

NTFF : Coloquial term used in Australian Slang

Nice Try Fail Fuck Off

known to be used by SGT's during basic training .. before political correctness.

Gary : I reckon it's your shout

John : NTFF

Gary : O.K you shouted the last 5 times, my shout now

NTFF by john.m.07 January 28, 2012

NTFFB 

No time for Facebook.

Status: I'm busy at work this week. NTFFB.

NTFFB by Mark Hefner December 17, 2008