3/5 

1. Pulling a 3/5 (3/5ing) - Making a statement that you are going to do something, but never planning on actually doing it.
2. A 3/5er - This refers to a police officer or some sort of official who:
-Gets rid of all the evidence of something and then claims it never happened, despite multiple witnesses.
or
-Claims that something is only a rumor, but then takes extreme action as if it where a serious threat.

1.
Kid 1: "Tomorrow is the day, I can't take it anymore, I am going to kill myself."
Kid 2: "Nah, you're just 3/5ing"

Dude: "Hey, Jack said he was gonna kick my ass today, but he pulled a 3/5."

2.
Man: "I know you may have heard the rumor that there is a bomb in this building, but it is only a rumor, there is no evidence.
(Bomb Squad Arrives)
Other Man: "Dude he is such a 3/5er."

3/5 by Some RHS Dude March 5, 2004

3/5 

Referencing The Three-Fifths Compromise. Which was an agreement reached during the 1787 United States Constitutional Convention. It addressed how enslaved people would be counted when determining a state's population for representation in Congress and for taxation purposes. Delegates agreed that each enslaved person would count as three-fifths of a person.

You can have a 3/5 vote, so I win.

3/5 by AvaCam September 17, 2025

3.5 

1/8 of an ounce of Marijuana.

Moron: How many grams are in 1/8 of pot?
Normal Person: 3.5 you fucking idiot.

3.5 by candice D May 16, 2005

3.5 

The base between 3rd and 4th (when defined as hand jobs and then sex) which describes oral sex.

We didn't wanna have sex yet, but we went to 3.5 last night.

3.5 by SallyandSam December 12, 2008

3.5 

A female who has reached the status to make say, "gimme 3 and half minutes,maybe 4 she'll be wanting to marry a nigga."

fine ass girl walks in a room....you yell THREE POINT FIVE....and someone responds, round that shit up.

3.5 by Capt. Nick March 4, 2003

3 5 

An incompetent or a lazy person who tries tro explain what they have done, e.g. in a scrum meeting.

Manager: What did you do yesterday?
Tamto: Umm, thing 1, thing 2..... 3 5

3 5 by Sandekar November 11, 2021

3-5 Business Days 

Commonly used phrase in Hypixel and Hypixel-related communities to represent something having an undetermined amount of time, that's likely to almost never happen or take a very long time.

It is said to have originated from the "Wizard Tower" of Hypixel SkyBlock where the NPC there has been replying with the dialogue: "Hmm...something appears to be broken. Give me 3-5 business days to fix!" for the past ~2.5 years and counting.

Friend: "When is x coming out?"
Me: "3-5 Business Days"

3-5 Business Days by Melancholy Cloud September 1, 2021