one 

A great answer to give in math class when a teacher asks you a question to make sure you are paying attention, and you don't know it because you really weren't paying attention.

Great because it is more likely to be the right answer than any other number. Also, even if you're wrong, everybody will think it was just a joke and you will come out on top.

Do not try in other classes or you will look like a dumbass.

Me: zzz... "snore"

Mr. Lashower: Erick, would you please tell me what anything to the power of zero is?

Me: "wakes" Uhhhh.... one?????

Mr. Lashower: Yes, that's the correct answer.

Me: Bitchin'. This shit works.

OR...

Me: zzz...

Mr. Goldfischer: Erick who won the Battle of Stalingrad?

Me: One?

Classmates: WTF ?!?!

one by Erick A. C May 24, 2009

one 

A term one uses when departing. It's similar to saying "peace" when you're about to step out.

Aiight bro I got some errands to go catch up on. Catch u lata. One.

one by GMoney April 18, 2003

one 

another word for 'peace'

him: gta go, 1
me: buhbye

one by goober January 1, 2005

One 

A unit of sex, although with no concrete definition. This can be given or slipped.

"Have you seen that Kate Moss. She's got tits like fried eggs but I'd certainly slip her one."

Mario: "How many marks would you give Princess Peach, out of two?"

Luigi: "Hmm. I'd give her one."

One by HMB July 12, 2003

one 

l33tsp33k replacement for the exclamation mark. Originates to the common typo in which a "1" is typed instead of an exclamation mark, as a result of the shift key not being held down. This evolved into the current derivative where the term "one" is fully typed.

OMG TEH MARTIX REOLADED IS TEH ROXXOR!!!!!!!111111oneoneone

one by EJL December 28, 2004

one 

a fucking number. one, just one. having more than zero, and less than two. a kick assMetallicA song. #1.

darkness
imprisoning me
all that i see
absolute horror
i cannot live
i cannot die
trapped in my self
body my holding cell

land mine
has taken my sight
taken my speech
taken my hearing
taken my arms
taken my legs
taken my soul
left me with a life in HELLLLLL!

one by MetallilbangeR April 7, 2005

one 

An abbreviation of "one love". It's a cool way o end a conversation.
One love represents the love between the whole world. All races, everyone.

Guy A, "Yo mayn, what's good?"
Guy B, "Nuttin' much mayn, gotta bounce."
Guy A, "Aiight, One"

one by Jay from da MIA August 3, 2006