1 definition by the incredible edible Jonny!
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.
Commercial lines;
"I'm taking away your phone for a huge bill."
"Mom! TISNF!
"I'll tell you what's.... snf........."
life example;
Girl: Oh my god! I'm freaking out of gum.
Guy (valley accent): Uhh! TISNF!
"I'm taking away your phone for a huge bill."
"Mom! TISNF!
"I'll tell you what's.... snf........."
life example;
Girl: Oh my god! I'm freaking out of gum.
Guy (valley accent): Uhh! TISNF!
by the incredible edible Jonny! June 5, 2009