Number One! 

When something is amazingly awesome, parcticly too awesoem to think aobut, so you say its Number one!
Apose to it being number two, meaning the same thing as the bathroom associated thing.

"Rico, this thing is NUMBER ON!"
"Thanks, man. This is Number One!"

Number One! by DieWeak73 March 18, 2008

Number one

Yourself ­­­

Gotsta look after number one

Number one by One Eyed Milkman May 4, 2004

number one

The best, greatest of all time

He was number one after he won

number one by Young Sun January 2, 2006

number one

shortest haircut a guy (or gal) can get.

check out that bogan with a number one!

number one by Squidling January 7, 2004

Number one

When you pee/piss/urninate.

Hey I'll be right back. I've got to go take a number one!

Number one by yowhatstheshitsnoopdoggie June 29, 2016

number one

being at the top of your friend's best friend ranking. A number one takes on duties and privileges that must be held account for.

Luan: yo peter, you're my number one now.
Peter: What about Pat?
Luan: Man that skank ahh nig aint nothin but a bitch
Peter: Thank you luan, i'll do my best.

number one by Peter December 9, 2008

number one

Captain Jean Luc Picard addressing Commander William T. Riker.

You have the bridge Number one. I have to go take a number two.

number one by Nonchalant Ego March 25, 2010