A constant compiled into a computer program or used in a file format for the purpose of being identifiably unique. A number which could only exist in memory on purpose and rarely by accident. For example, 0 is a bad choice for a magic number, since it's the default value for memory when a computer is turned on.

Programmers use them to quickly validate a larger data structure which could crash if it guesses the type wrong, using the theory that whatever code put the magic number there probably got the rest of it right, since they would have made it store the magic number AFTER everything else checked out.

Usually it's something easy for a programmer to remember, like DEADBEEF or B00B135 or something equally assinine.

It's like a secret signal or whistle you might use with friends when trying to coordinate something sneaky.

I fed an mp3 I accidentally renamed to a avi into windows media player, but it didn't crash because it checked the magic number first.

magic number by pr0ntab January 8, 2004

magic number

1. A score of 69 or a run of 69 consecutive points in straight pool.

2. The 6-9 combination in pool, especially 9 ball.

3. 69 (the sexual act).

1. Wow! She won the match 100-73 and had advanced to the finals. No one thought she'd pull it off when she was down 73-31. She performed the magic number---69 and out! One hell of a run!!!

2. Look! All I have to do is hit the magic number and I win this rack. The 6-9 combination--ooh, la la, so soon!

No wonder those two are so quiet: they must be performing the magic number on each other

magic number by meow2u3 August 15, 2010

magic number

A guy's "magic number" is the number of inches his penis is. IT SHOULD BE MEASURED IN WHOLE INCHES, OR HALF INCH INCREMENTS. No 3/4 shit.

I just found out my boyfriend's magic number! But dude, he was a douche and said 7 and 3/4 inches!

magic number by tehhottlemon December 19, 2005

magic number

1. A score of 69 in sports.

2. The 6-9 combination in pool, particularly 9-ball.

3. 69

1. What's the score?
I got the magic number

2. One way to win the rack: the magic number. The 9 is hanging in the pocket.

magic number by Stop the pendulum January 11, 2006

Galantir

A group of people, typically women, searching through someone’s digital footprint in order to find more information about that person.

Susie wasn’t sure if her new Hinge match was a creep, so she assembled Galantir and they found out he used to post slurs on gaming forums.

Galantir by Ge-sus September 22, 2026

Word of the Day on September 23, 2026

murderhobo

In a tabletop game, a murderhobo is a player who murders NPCs indiscriminately. This is normally derogatory, referring to a player who totally ignores quests, dialog, backstory, trade, world building etc.

The term is most common with Dungeons and Dragons, but it can be applied to most RPGs where the player is allowed to kill most quest-giving NPCs and NPC traders. E.g. Elder Scrolls, Fallout, Divinity original sin.

DM: The sad little orphan girl tugs at Steve's trenchcoat to get his attention, and ask for help saving her pet dog from...
Steve: I'd like to roll a strength check against strangling the orphan.
Dave: I call dibs on the dog.
DM: You murderhobos disgust me.

murderhobo by Loup&S September 9, 2021

Word of the Day on September 22, 2026

Whale

In sales terms, a whale is a prospect that is significantly larger than an organization’s average customer.

Whales are large and extremely difficult to close. Due to their immense size, they are highly sought-after.

A whale is typically identified at first by a whale hunter on the sales team, but often requires cross-discipline participation in order to close; this includes assistance from operations, engineering, creative, client success, and business development teams.

"Shit...the sales director chewed me out on the sales call this morning. He's totally pissed that I have nothing in my pipeline. I've been focused on this one whale for so long that I haven't had time to prospect for normal-sized deals."

Whale by FQ_GFY February 3, 2020

Word of the Day on September 21, 2026

Concrete cowboy

A guy who thinks he's a country kinda guy, but in reality lives a comfortable city / suburban life.

Eugene: Look at that dude in the cowboy hat!
Todd: He's just a concrete cowboy.

Concrete cowboy by EugeneJohnson42000 March 16, 2024

Word of the Day on September 20, 2026

hobo loko

any hard liquor that is cheap & potent.. eg. relska, popov, potters, evan williams, kamchatka, fireball, rumpleminze, southern comfort, everclear

hey let's get a drink of that?

go ahead
*takes drink* ugh wtf is that?

everclear & bepsi
fucking hobo loko eeessshh

hobo loko by d i z k o 2 0 8 September 14, 2026

Word of the Day on September 19, 2026

God Shot

A chance happening with profound meaning, an unexpected blessing, a "sign".

Dr. Drew on Celebrity Rehab said "All of a sudden what had been just another Hollywood proposal became for him an unexpected blessing, an opportunity for growth. In drug recovery language, that's called a "God shot."

God Shot by Imogen1564 February 25, 2011

Word of the Day on September 18, 2026