Upvote this if you think it's 2
Person 1: What's 1+1?
Person 2: Window
Person 1: No! you didn't fall into my upvote trap.
Person 1: ????
by TTV.MrSAVAGEllamaHUMAN October 7, 2019
1+1 = 2

Used by many kids in Elementary School at an attempt to be funny.
Kid 1: Well, whats 1+1?

Kid 2: 4

Kid 1: No! its 2!

Kid 2: no you got to add the 0's!

Kid 1: oh, haha, you coming to my birthday?
by Arwing9 October 18, 2006
Its a very simple math problem, but yet its freaking hard at three in the morning without coffee.
by Zack the feind ninja January 9, 2006
Q: So you gonna kick my ass?
A: 1+1 baby.....it's on. 1+1!
by Benjamin Funke January 8, 2006
1+1 = -2
Because:

1+1 = sqrt((1+1)^2)
sqrt((1+1)^2) = sqrt(2^2)
sqrt(2^2) = sqrt(4)
sqrt(4) = sqrt(-2^2)
sqrt(-2^2) = -2

This is because:

-2^2 = 4
1+1 is sooo not two. it's -2!
by Tepel October 25, 2006
When you copy and paste "!1!1!1!1!1!1!1!1!1!1" and go too far.
Person 1: SO FUNNY!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1!1

Person 2: Did this guy get crazy with the paste button?
by coolmathgames.com January 1, 2018