A way of saying that you don't know but want to make it look like you might know. Similar to saying "I'm pretty sure," but could also mean "I'm not totally sure."
Soldad: Did you do your homework?
Sonia: I think so.

Jeff: Is the final tomorrow?
Lola: I think so.

Chris: Do you understand the words that are coming out of my mouth?!
Jackie: I think so.
Chris: Is that a yes or a no?
by Insufficient Postage April 26, 2006
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When someone named manny says I think so to a simple question that a yes or no answer only
Girl -"So are we still friends "
Manny- "I think so"
by Extra classic bubble gum September 03, 2019
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What smelly people from texas that now live in new hampshire say
Are you from texas?
I don't think so
but you are!
I dont think so
by lool September 21, 2003
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A quote used by a bold one whilst facing a robotic general that's shorter than expected. It is used to counter said general's claims that he is doomed.
"Army or not, you must realize... YOU are doomed!!"
"Oh I don't think so"
by hihunter777 January 27, 2019
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A line repeatedly used in the song Obsession by exo. Said in a classic monotonous voice by the x-exo clones, It has become a meme among exols. Personally speaking, this is a line that will live on forever. It's like Shawty Imma Party Till the Sundown or chogiwa.
1.

Exols: Please give exo proper promotions .
SM: I don't think so (EXO).

2. Exols: Give Sehunnie more lines.
SM: I don't think so.

3 . Exols: We want a comeback with Lay.
Sm: I don't think so.
by ExolEriEgg No bias November 27, 2019
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Adjective noun; A phrase of impending animosity which is commonly used in conversations that do not have an advesarial tone.
"Does Tufts have rolling admissions?"
“I don’t think so biatch.”
by 3 Coulombs February 17, 2004
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