Number Crunchers 

People who do Soduku puzzles while taking a crap.

He's one of those number crunchers in the bathroom.

Number Crunchers by alfie_fan January 5, 2010

number four year 

A year whose number is divisible by four in which most events that operate on a four year cycle take place, such as leap year, summer olympics, and the United States presidential election.

Y2K was one hectic number four year.

number four year by gateway_gamer January 3, 2004

Number Three 

When you use the bathroom for urination it's number one.
When you use it to defecate its number two.
When you use it to masturbate its number three.

Number one - Gold like the sun'
Number two - going poo
Number three - the devil sets my sperm free
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I just went number three on myself.

Number Three by VegSXEBassist August 17, 2007

Number 4 

a picture message that includes the sender's penis

Casey sent Sloan a number 4. She has not texted him back since.

Number 4 by JP Lubrano February 26, 2011

Number 5 

To Masturbate. Number 1 being to piss. Number 2 being to shit, and Number 5, because you have 5 fingers.

Stop calling me, I'm taking a Number 5.

Number 5 by Eric December 4, 2003

number three 

referring to a human female's menstrual session.

"...you seem cranky, do you need to go make a number three?

number three by SpiderMAH May 3, 2009

number 10 

1.Everyone wants to be number one, and number ten is the end of the scale. Not to be confused with "She's a 10!"

2.Something inferior or substandard.

3. Unacceptable

"I don't like Salley. She's number 10."

" That food was number 10."

"I don't want any of that, it's number 10."

number 10 by Keith Chaney September 19, 2006