1 January 

January 1st! Day of "Break an egg in your friend's head"
Just do it! Τo keep the traditions!
When your friend isn't looking at you, slap them with an egg!
It's so fun!

-3...2...1... Happy new yeaaarr!
-**slap**
-Dude what are you doing?? lol
-Ayyy don't you remember!? It's 1 January "Break an egg in your friend's head " day!!"

1 January by gjdjlkjgljgklwrjfl November 13, 2020

1-10 Female attractiveness scale), 

A very sophisticated way to rate girls on their looks
1-A fucking monster, forces people leave the room
2-You wouldnt wanna poke her with a 10 foot pole
3-You'd only wanna communicate over text...no facetime
4-Just plain unattractive
5-Average, nothing about her appearance stands out
6-The squad would roast you for liking this girl but not too bad
7-Decently attractive
8-Pretty hot; if she doesnt has a boyfriend, she will soon
9-One hot piece of ass
10-God's gift to mankind; the definition of perfection

Guy: Yo I just got asked out on a date by Brandy!!
The Squad: Shes definitely a 2 on the 1-10 Female attractiveness scale), total troll.

1-10 Female attractiveness scale), by C the Savage October 21, 2016

1/5 hump reverbiration

When you are doing it doggie style, and you make her lay down, while you are still inserted, and have her perch her butt in the air a little bit, and go at it like that.

"1/5 hump reverbiration is the best position ever, its like doggie, laying down"

1/5 hump reverbiration by Johnnie Walker May 19, 2006

1-2-3-4!

This is a term associated with rock music, notably punk rock as this is what a given band member would yell out right before starting a song at a concert. It was made famous by the New York punk rock band The Ramones, whose bassist Dee Dee Ramone would always yell out before every song
and sometimes even during them.

"Dude, you think Dee Dee's voice gets tired from yelling 1-2-3-4! all the time?"

1-2-3-4! by Clarence Washington November 22, 2004

1:30 dirty 

The "leftover" chicks that are still at the bar close to closing time. If they came for a dicking and they haven't went home with anyone, they're starting to get desperate and will start lowering their standards to include you.

Bro #1: Dude, that girl was so hot last night.
Bro #2: I know! I got stuck with a 1:30 Dirty.
Bro #1: That sucks man, pussy is pussy though.

1:30 dirty by DeadSpace909 October 13, 2013

1 man 2 needles 

1 man 2 needles

A video continuing from the internet shock sites (such as 1 man 1 jar and 2 girls 1 cup) which involves 1 man sticking 2 needles in his scrotum.

This video is no longer available but if you research 1 man 2 needles you will find a man who has injected silicone into his balls for 6 years and his balls are the size of coconuts.

I have heard about the original 1 man 2 needles video but I can't watch it as it's no longer available.

1 man 2 needles by Prostate Exam May 28, 2014

1 2 3 4 5 6 7 8 9 10 

Why are you looking at this definition? You know how to count to ten.

Guy 1: 1 2 3 4 5 6 7 8 9 10
Guy 2: Smart.

1 2 3 4 5 6 7 8 9 10 by Matt11111 January 2, 2012