This is so not fair!

Noun: a friend who is usually only called upon by a friend when a more primary/prominent friend is unavailable.

Taken from the term “second string” in an athletic competition situation. In football, if the star quarterback gets injured during a play, the second string is called off the bench to replace him/her. A “Second String Friend” is essentially benched until needed, if ever.

Synonyms: Plan B, Second Choice, Secondary Friend, Benched Until Needed

A phrase that absolutely nobody uses, which according to a recent commercial for cingular stands for "This is so not fair."

American chat english for "This Is So Not Fair".
Usually used when parents take away cell phones due to severly high phone bills.
(Yeah this is from the commercial)

TISNF has become the icon for preppy girls that never seem to stop texting, or have a valleygirl accent. TISNF stands for "this is so not fair" and is taken from a cell phone commercial campaign by cingular, now AT & T. used to imitate women in a sarcastic manner, usually when they flip out about something that's really not that big a deal, throw in a TISNF to get a laugh out of the guys listening.

That is so not fair! One of many acronyms that have been created by the IM age (instant messaging) that we live in.
q.v. NBD (no big deal) and BFF (best friends forever).

tisnf stand for this is so not fair. it is commonly used in IM