Mom: Who are you texting three hundred times a day?
Kid: IDK My BFF Jill
by zak221133 May 9, 2007
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A funny quote from a cell phone service provider commercial (that probably doesn't work, but their advertisers know how to do a good job) after a mother asking their young daughter why the texting bill is so expensive. It's a common way to answer annoying questions to Myspace surveys or generally obnoxious questions
Annoying girl says, "So, who do you have a crush on?"
Response, "Idk, my bff jill."
by Basket Case October 16, 2007
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1. "I don't know, my best friend forever, Jill."

2. A famously said quote on a Cingular cell phone commercial about a girl who texts alot. Her mom asks why her cell phone bill is so high, she wonders who she has been texting. The teen replys, "idk, my bff Jill?"

"Bethy!" calls mom.
(Teen girl comes to her mom)
"w.a.u?" she replys
"Your cell phone bill is whats up! All this texting!?"
"O.M.G! I.n.p.d!"
"It is a big deal! Who are you texting 50 times a day!?"
"Idk My bff Jill?"
"Tell your 'b.f.f. Jill,' that I'm taking away your phone"
(Teen hands phone to mom)
"T.i.s.n.f!"
ME PAYING THIS BILL, THAT'S WHAT'S S...N.F!"
by Quaviavid December 10, 2007
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