4-0

Derogatory slang for mall security guards/vehicles. Derived from 5-0, a slang term for police officers/vehicles.

The 4-0 got on my ass after I boosted that Clay Aiken CD from Sam Goody.

by Sam March 4, 2004

4-0

Often used by fans of finished club FC Barcelona when something doesn’t go their way and they get mad. Their biggest trophy and achievement in season 2021/2022. Used by them to annoy other people but they didn’t found out yet that nobody cares anymore.

Person 1: Real Madrid are winning La Liga this season, maybe UCL and will get Mbappe for free.
Person 2: 4-0.

by honest barcelona fan April 9, 2022

4.0

A Bachelor of Health Sciences Student at McMaster University in Hamilton, Ontario, Canada.

Currently resides in Mary E. Keyes Residence.

His ideals are reflected by his relentless pursuit of a perfect GPA: a 4.0, so to speak.

The man would give up anything and everything for a 4.0, including all extracurricular endeavors and sex life (or lack thereof).

When asked "How would you like to go on a date with me?"

4.0 answered, "I'm sorry, I cannot do that since I must focus on my studies."

by Tripse 4.0 February 1, 2010

4-0

A civilian or any non-law enforcement person who will (try to) bust you.

You check for people in here, I'm not tryna get caught

Yeah, no 4-0, were good.

by pitabreadyum July 6, 2010

4-0

Street slang for an undercover cop.

Ay mane I think a 4-0 dry dat vic mane

by Champ119 August 4, 2017

4-0

slang for a fourdypronunced four-o.

He the the store and get me a 4-0.

by B from the bay December 23, 2005

4.0

ford mustang 4.0 v8 convertible

got pulled up in my 4.0 and got ticket for no licence

by elilaporte January 11, 2009