#4

Oral sex performed on a woman. The term is believed to have originated from the extra value meal menu at McDonalds (Filet-O-Fish was the #4).

What I'd give for a cold sparks and a #4 right now!

by Baby_Sasha January 15, 2007

<4

Originally a typo of the commonly used emoticon <3, <4 is now used to convey a love so great that <3 simply cannot explain it.

Person 1: I love you. <3
Person 2: I love you MORE! <4
Person 1: :: Giggles and hugs. ::

by Sephylight March 5, 2005

4

A number which is considered extremely unlucky in Chinese and Japanese culture. The pronunciation of the character for "death" sounds like that of the number four in both languages, making it a number rarely seen in hospitals (or pachinko halls).

In Japan, more people on average die on the fourth day of the month.

by Matticus November 22, 2003

<4

A symbol used when someone uses a 4 instead of a 3 when making a heart symbol <3. This can be done on accident making the user look stupid or it can be done on porpose meaning the user more than <3's them.

Tiffany - "Okay. See you then - <4"
Mike - "You're an idiot."

Jen - "I love you more than anything in the world. <4"

by cpaul1850 November 9, 2011

<4

The broheart. Used to express a deep affection for a bro, with absolutely no homosexual intent.

Man, what a great weekend. <4 guys, let's do it again soon.

by Ch33s3 November 2, 2010

4

two plus two; two times two

2 + 2 = 4
2 x 2 = 4
4 is a great number
it's the fourth number of all numbers
did you know that?

by Sir Ryan December 3, 2006

4

In binary, 00100.

Binary can be shown by holding up a finger for 1, and holding it down for 0.

So... try it.

00100.

See?

I shake my binary 4 at you!

by Jargon File April 17, 2006