A phrase used to tell another person to politely say, "I have no interest in continuing this conversation or listening to you complain." In its hardly ever used long form, it would be used as, "I don't know what to tell you to get you to shut up." Extensively used when people present you with a problem, you offer advice to them on viable solutions, but they come up with excuses why they can't follow your advice.
Person A; "complain, complain, complain. My car broke and I can't get to work now. And boss says he'll fire me if I miss another day!"
Person B; "Take the bus."
Person A; "There's no bus route within a quarter mile, and my feet hurt so much."
Person B; "Take a cab."
Person A; "I can't afford a cab with these car repair bills!"
Person B; "I don't know what to tell you."
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Typical (usually teen) melodrama where nearly every episode includes the phrase "There's something I need to tell you". The "something" usually involves a previous lie, backstab, pregnancy, or other misdeed.
"I can't believe I just watched 7 episodes of 90210 in a row!"
"That's pretty sad... what do you think is wrong with you?"
"I don't know... I think I'm addicted to "There's something I need to tell you" dramas."
by liversounds July 15, 2014
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The scene in movies and tv shows when one person is about to tell another person something, but the other person interrupts and says something that convinces the first person not to say anything. The other person usually finds out the truth anyway. This scene is being over used in tv shows and chick flicks
The classic "I have to tell you something" moment

Girl: (thinking) I don't want to go out with this guy, he's weird! I'm gonna break up with him.

Guy:hey how are you?

Girl:I have to tell you something.

Guy:me too... My aunt just died after a long, painful battle with cancer and her dying wish was for me to give you her priceless diamond ring. So what were you gonna tell me?

Girl:Uhhh... (in fake voice) I just wanted to say I'm so excited were going out yaayyy...
by afroman473 July 23, 2009
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A saying that's used to tell someone nicely that nothing is getting done about something,that they simply don't care or that you're "shit out of luck"
Employee: "We have a lot of work and no time to do it" Boss: "I don't know what to tell you"
by battleaxe June 13, 2017
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A phrase used when something can't be explained to a child
7-year-old: *catches adolescent brother watching porn* What is this?
Brother: I'll tell you when you're older.
by frabrizio March 24, 2017
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usually said by younger sibling to get you in deep shit with your parents
me: HA I beat you at the game
sibling: I'm telling on you
me: no ya not
*hits sibling*
sibling: WAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA MUM! HE HIT MEEEEEEEEEEEEEEEEEEEEEE
by wake me up insidedeath March 8, 2017
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