0-5 Scale 

Used to describe initiation preference in a sexual situation. A zero is someone who never wants to initiate anything sexual. A five is someone who always wants to initiate. Most people believe they are three's. Typically people on opposite sides of the scale work best together (like a zero and a five, or a two and a four). You can't have two zero's because nothing will happen. And you can't have two fives cause they'll get in each others' ways.

Bro, that girl is such a five on the 0-5 scale! Go tap that!
No way man, I'm waiting for a zero! I hate starting things!

0-5 Scale by jzzzzzzzzzz November 4, 2010

0.5% rule

The phenomenon that denotes the homosexual rule. A rule that decides if you are either straight or gay-

1. If you define yourself as 100% straight = you are 100% gay.
2. If you got 0.5% gayness in you = you are 100% straight.

- "Hey bro, wanna touch my dick?"
- "Ew wtf, no dude" = 100% gay

- "Hey bro, wanna touch my schlong?"
- "Hell yeah bro, gimme that (no homo)" = 100% straight

0.5% rule

0.5% rule by Schlongdong123 September 4, 2020

a laugh and a 0.5 

Internet/IM speak for a laugh and a half, meaning something is mildly amusing. Substitute for a higher fractional number if the situation calls for it (i.e. a laugh and a 0.7).

Person 1: Did you see yesterday's episode of The Daily Show? It really was a laugh and a 0.5.

Person 2 appears to be offline.

a laugh and a 0.5 by Anouska DS February 24, 2009

Rule 0.5 

A rule of table top gaming. If the DM/GM is being an Ass/dumbass/idiot and/or abusing rule 0, the players can choose to override him by leaving his game and starting their own.
An alternate version involves Smacking the DM over the head with the Dungeon Master's Guide.

DM: The ghoul rolled a 28 On his check to resist your Trip attempt.
Player: How the Hell does a ghoul get a 28?
Dm: With His +8 grapple modifier.
Player: But it is a Strength check, not a grapple!!
DM: I am the DM, Under Rule 0 I say He uses his Grapple Modifier.
This is where Rule 0.5 Is invoked
Every player at table: Smacks DM upside head with books and Leaves game.

Rule 0.5 by Eldrich Thurge January 30, 2009

national 0.5 day 

national 0.5 day where your pictures that are taken in the 0.5 camera shine on december 8th.

“Hey do you know what today is?”
“December 8th”
“No silly, national 0.5 day!”

national 0.5 day by smoochi December 8, 2022

5.0.5 

a cute bear with a flower on its head created by Dr. Flug from the CN show Villainous

"I've only had 5.0.5 for a day, and if anything happened to him, I would kill everyone in this rom and then myself,'

5.0.5 by Cartoonerr December 24, 2020

tier 0.5 

The Tier 0.5 quest is a long ass quest line for shitty gear in the game World of Warcraft. It is an exceptionally time consuming, in some cases difficult, and costly chain that involves a 45 min. UD strat run halfway through, not to mention close to 300g in expenses (if your lucky).

Note:(I understand most of this is the writers views and not necessarily facts. Sorry if my oppinions offend anyone)

1. XnewbX: Hey guys, I have one more part to do for my tier 0.5 quest!!
Koruptwon: Quit while your ahead...
2. Yes! I just got my Sorcerer's mantle from my tier 0.5 quest! Oh, wtf my backup gear is better than this shit..
3. Damn.. that tier 0.5 quest line was a huge waste.. Now I want to skull fuck someone in the asshole

tier 0.5 by Koruptwon August 9, 2006