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magic number 

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

three is a magic number 

This is a phrase people would use if they are stalking peppa pig.
What are you doing today?Three is a magic number magic number

Magic Hat Number 9 

After ejaculating in a condom, you quickly pull it off and put it over a girls head, then punch her in the face and say "abracadabra!"
I finished off the night with a Magic Hat Number 9, and she disappeared after that.
Magic Hat Number 9 by Angel15w January 16, 2009
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funflation 

The recent boom in consumer spending on entertainment and experiences with a high demand running up the cost of enjoying of those experiences.
I’m trying to go to this Taylor Swift concert but the funflation has made it so impossible for me to afford tickets.
funflation by Dfree523 November 17, 2023
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Take the big pirogue, I saw a huge swamp dog out there earlier.
swamp dog by Crystal Ambrose May 22, 2006
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