number is up

Someone's number is up the moment before they die. When used in the past tense, it means they were destined to die at the very time they actually did die. When used in the present tense, it might be a threat to kill someone immediately.

The phrase is perhaps based on the Take-a-Number System, in which customers take a numbered ticket rather than waiting in line. When the clerk calls out your number, "your number is up", and it is your turn to place your order with the clerk. Of course, the clerk might be the grim reaper instead!

A tree fell and killed him because his number was up. OR: You've pissed me off too many times, Humberto; your number is up.

by jpUrbanDick January 15, 2014

numbersexual

Someone who experiences sexual enjoyment from doing math problems.

That numbersexual was moaning while doing his math homework.

by classholes November 26, 2014

Number 4

To ejaculate; to go number four means to ejaculate, whether from a penis or a vulva. To explain the structure; number one means to urinate, number two denotes defecation, number three refers to vomiting, and number four equates to ejaculation.

Mike: Holy shit! There's Nova!
Zack: Over there?
Mike: Oh fuck! I think I'm about to go number 4! I'll be right back!
Zack: Oh, ok then!
Nova: Hi Zack! Where's Mike, he was with you a minute ago, wasn't he?
Zack: Oh yeah, he just went number 4, that's all!

by JustAnotherSickFuckOnUrbanDic February 6, 2022

Love Potion Number Nine

Can only be found in good music.

"Bottoms up, sunshine; Love Potion Number Nine!" -Camp Lo

"She said, now What you need is Love Potion Number Nine" - Clovers

by Malikii March 12, 2011

number ten relationship

the result of an overly tall thin person dating a large round person, appearing like the number 10 when side by side.

"Saw Bob and Jessica walking down the street today - god are they a number ten relationship..."

by Mrs. J.Black September 6, 2009

number neighbor

Someone who has the same phone number as you, besides the last digit.

Greg: Hey, Karla, what's your number?

Karla: (719):558-9013

Greg: Hey! We're number neighbors! Mine's (719):588-9016.

by MrLemon333 August 6, 2009

Prime Number

Also known as Numeros Primos, this is a rare species, it is a part of the larger class of Natural Numbers, which turn out to all be made of primes. Primes have the special property that they are only divisible by one and themselves. This of course means 2 is the only even prime, which makes it the oddest of them all.

Prime Number: 2^237156667-1

by SuperReallyGoodAtMathGuy December 22, 2008