An emergency exclamation used to alert friends in the immediate area of the necessity to leave RIGHT NOW with no questions asked, usually because you have just comitted a crime or done something illegal or that you will be in very big trouble for. Like "bounce", only much MUCH more urgent.
"Dude, why did you call 1, 2, 3, bounce? I was getting ready to buy a manga."
"Because I puked all over some books in the C++ section."

You should never yell 1, 2, 3, bounce unless you really mean it.
by Codababy April 28, 2006
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The test given to an extremely drunk chick to see if she is fuckable. Involving lifting and dropping her arm 3 times to see if she is cohearant.
Freddy pulled that 1-2-3 Test on that drunk chick and then made out with her.
by JAM May 17, 2004
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A sequence often used at the start of rock songs. It has several variants including "A 1 A 2, A 1-2-3-4!"

However it sounds a litle stupid in the middle of songs (see Altogether Now by the Beatles).

ALso the first 4 numbers!
1-2-3-4 cue brilliant rock or really lame derivative song.
by Lambchops November 24, 2004
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1, 2, 3, 4, 5,
Once I caught a fish alive!

You know, the song we all start singing in maths class when we’re bored and we count 5 things, am I right??!! Oh, just me who does that? Oh o_o
“1, 2, 3, 4, 5, once I-

Be quiet or I’ll make you and the fishy dead!”

:(
by Sapphire14 March 27, 2022
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when you do something really stupid but are oblivious to it at the time.

it all started when my dopey friend listed something as
1)
2)
3)
5)
without realising, because she's an idiot :)
an example of "1, 2, 3, FIVE"
nida: and i told him i thought the moon was made of cheese! how stupid!!
me: yehh obvs! that was soo 1,2,3, FIVE
by ShauniTheSerialKilla August 2, 2008
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A meme within the Taylor Swift fandom created after a video went viral of a girl screaming “1 2 3 let’s go bitch” during the song Delicate at Taylor’s reputation Stadium Tour in Pasadena. This trend caught on quickly, to the point where Taylor even started to join in by counting on her fingers. To this day, the meme lives on.
Taylor: “We can’t make, any promises now can we babe, but you can make me a drink...”

Swifties: 1 2 3 LET’S GO BITCH!!!
by tsmemories February 23, 2019
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1. Drink an energy drink, preferably something strong like NOS
2. Look through your notes as fast as you can, regardless of if you can actually read it or understand it.
3. Bust a Nut (tm).
4. Take a nap.

Repeat steps 3 and 4 as necessary.

Also known as the 3-4-3
"Have you heard of the 1-2-3-4 Study Technique?"
"Yeah dude, in fact, I'm going to do a 3-4-3 right now before my chemistry test!"
"Awesome!"
by Erik Ward September 20, 2007
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