The 1.5 

An impromptu defecation involving an individual (esp. male) who chooses to urinate in a seated position.

Dude, sometimes I just like to pee sitting down because not only is it more relaxing and hygienic, but you never know when the 1.5 will show up.

The 1.5 by Will "Cool Whip" Wheaton February 22, 2010

The 1-5 Scale 

This is an amended version of the 1-4 scale. This scale removes almost all subjectivity from measuring your attraction to someone. Posts on this site have done their best to set out this scale, but this is the definitive, amended version.

The Basic 1-4 Scale (as already noted by Howie440):

1. I wouldn't and I don't see why anyone would.

2. I wouldn't buy I can see why someone would.

3. I would but I can see why someone wouldn't.

4. I would and I can't see why anyone wouldn't.

A New Addition (the 1-5 scale):

5. I would, I can't see why anyone wouldn't, and I'll be happy if I can just get with them.

Amendments & clarifications:

i) Who can really be considered a 4? - To avoid any subjectivity, keep in mind that: if everyone in the group says they're a 3, they're a 4. This is because if everyone calls them a 3, then everyone would and, therefore they're a 4.

ii) The 5 - More of a theoretical idea than a reality. The 5 is someone whom you would be completely satisfied to get with (make out with) once and never see again. They are so attractive to you that you would happily take the one opportunity and never try to talk to them again.

However - this means that if you do try to talk to, message, or get with them again, they are now by default a 4.

iii) It should also be noted that much like how any 4 must already be an agreed 3, any 5 must already be an agreed 4. This is continuous scale.

Me: "Hey, how was the club last night?"
Roommate: "Pretty good, I met someone."
Me: "Nice, good looking?"
Roommate: "I'd say 8/10."
Me: "How am I meant to know what that means, use the 1-5 scale."
Roommate: "Oh like a solid 3."
Me: "Glad to hear it mate."

The 1-5 Scale by yourwelcome03 February 6, 2022

The 5-1-6 

516 is the area code for Nassau County, New York on Long Island. The 516 includes excellent places to blaze up the chronic, including HEMPsted, Jones Beach, and Teddy Roosevelt's grave.

It's much better to blaze up in the 516 than in the 631 with all those Suffolk County pussy poseurs.

The 5-1-6 by Oyster Bay Playa December 5, 2004

The 5 to 1 

When someone waves to you starting with 5 fingers then transitions to kind of pointing at you with the index finger.

I passed a good ole boy on the road and he gave me the 5 to 1.

The 5 to 1 by da realest wolfpackcaniac January 25, 2017

The 1.50 Rule 

A 1.50 is when a girl gives a male one dollar and fifty cents to let her suck him off and yes swallow. Otherwise known as Reverse Oral Prostitution. The rule is the definition

Damm she really gave you a good o'l 1.50

Remember The 1.50 Rule she pays you to suck you off

You 1.50 lover, you've been giving 1.50s to every Bob-Tod Jones in the county.

You'd give a 1.50 to everyone in school you slut

The 1.50 Rule by Big Daddy D (Vitamin D) February 10, 2020

The 15 

But seriously what is the 15

Oi what's the 15 tho

The 15 by Jedd brachi January 19, 2019

December the 15th 

National ask your crush out day.

Oh no it’s December the 15th

December the 15th by Sachin Mistry December 8, 2019