0.5 

a fart, lighter than a piss (which is a 1) and a dump (a 2)

damn bro, just dropped a 0.5

0.5 by sizzlezbboy November 1, 2010

0.5 

Seeing a girls bra strap or slight bit of underwear

Dude1: woah, look at that bra strap!
Dude 2 : Oh man, you just got to 0.5 base

0.5 by DeviousLaughter September 9, 2015

0.5

its a decimal and half of 1. its a bit useful if you think about it.

1/2=0.5!

0.5 by gavrielisplayingroblox_yt September 14, 2026

0/5 

the very sad term directioners use, when none of one direction follows them.

directioner: 0/5 :(
directioner: i feel ya, let's cry together.

0/5 by Brittany Horan September 17, 2012

0-5 

Verb: When a situation is extremely pressing or tight. A close-call. An event or happening usually resulting in some sort of crises, disadvantage or conceding to your opponent. A classic 5 - 0 scoreline in a game of FIFA.

"He came in the 0-5 dawg.", "That was clutch my g, like bruh bruh came in the 0-5 bro!"

0-5 by MoustacheRapper05 November 18, 2020

0.5 inch 

A micro-penis but still bigger than most womens

Man:"i have a 0.5 inch penis and i feel anxious" therapist:"well, it seems like you have a micro-penis, but hey its bigger than womens... For now there is a definition on UD if you need to know the same thing i said".

0.5 inch by Something- May 10, 2021

0.5 on the sides

A haircut that has been done nicely, only a group of metes can be part of this clan.

I got that 0.5 on the sides

0.5 on the sides by Harrynicely January 11, 2014