imaginary number 

A number that can be written in the form a+bi, where a is zero and i is the square root of negative one

Examples: 3i, -2.8i, 5000i, etc.

imaginary number by A equals A April 11, 2005

H number 

Drug lingo mainly used by inmates in the prison system to denote when the last time that they have gotten high on heroin.

My H number is at 20 days since the warden cracked down on us last month.

H number by Markie Morgan September 10, 2008

take a number 

What is said when you need something from someone that is very busy with more important issues than your own.

Darrell: "Jaret, I can't get my test stand running"
Jaret: "I've got so much stuff to do, you'll have to take a number"

take a number by Jaret October 12, 2004

going number 3 

That time-of-the-month.

Hey Gary, wanna play poker tonight?
Ugh. I wish. My wife is going number 3.

Beth, do you have any tampons? I'm going number 3.

Why you got laser eyes baby? Are you going number 3?

going number 3 by willbdefined4u August 31, 2010

tootsie roll critical number 

the number at which the tootsie roll effect, therein goes into effect.

I met and surpassed the tootise roll critical number, as i am now here suffering the consequences on the shitter.

tootsie roll critical number by rudog September 8, 2005

Hello number nine 

A phrase whispered by a heavy drinker to his 9th beer at a tailgate party.

Did you here Robert say hello number nine?

Hello number nine by John OC December 9, 2006

she did a number one on me 

The act of a female riding a guy

She did a number one on me

she did a number one on me by Showtimebigtre February 23, 2020