November 15

The day you get to throw any person that is 5'4" or under.
Bo: It's November 15th...

Andrew: No fuck off i hate you
by Poor Charlie November 03, 2019
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May 15

May 15 is normal... But not for me it is my b day, or as I call it NATIONAL CUPCAKE DAY. So remember to have a cupcake and a blast on May 15 bye!
May 15= get a cupcake and have a party.
by Black_Wolf378 October 30, 2019
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AR 15

AR 15 is the civilian version of the military's M4 carbine. Contrary to what most people believe AR doesn't stand for assault rifle, rather it stands for the original manufacturer Armalite Rifle. AR 15 is semiautomatic and does't meet Federal requirements to be classified as an assault rifle.
AR 15 is so legal in Kalifornia, now everyone is sporting it
by Nasor6221 July 02, 2015
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October 15

person 1: hey its October 15th
person 2: otay so?
person 1: its my fucking birthday
person 2: oh happy birthday i guess
person 1: thank fucking you :D
by scrubby bubbles :) September 30, 2021
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Midnight 15

When during a year, a guy or girl ends up staying up past midnight and eating a lot and not being able to exercise outside due to it being super late, they end up gaining 15 pounds or more. It's usually eating junk food and you even cook stuff that's not the healthiest, but usually super tasty stuff.
*midnight
Fernando: I'm cooking Mac and cheese with hotdogs in it. Mmmmm.

*eats it.

(Next day)

*Midnight
Fernando: I'm cooking chicken chili with beans and some popcorn.

*eats it

(Wednesday)

Fernando: I'm cooking and eating a salami and cheese sandwich with a 20 oz Orange soda. Also, a bag of chips.
*eats it

Fernando: Crap! I can't go to the gym at midnight.

A year later.

*gets scale
*Gained 29 pounds.

Fernando: Aw man! The midnight 15 is real!
by HawaiianPunch1 June 23, 2023
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January 15

National bitch slap day. Bitch slap anyone you want without getting in trouble.
1. Bitch slap,
The slapping with the back of your hand
2. Guys and girls, watch out on January 15.
by SToNKs masTeR January 15, 2020
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