must-have 

needed or truly desirable; essential; also, something that is considered essential or truly desirable

This LEGO set is a must-have!

must-have by Fergiinka March 28, 2010

must-have 

Highly recommended or add into a collection

Outkast's "Speakerboxxx/The Love Below" is a must-have.

This is a must-have for those that want real music.

must-have by Henry Cooper November 20, 2004

Must Have Been 

Someone who is always at the center of something going wrong. A scapegoat. A deviant.

It Must Have Been Chris Valentine.

Must Have Been by BrittanyJohnson January 25, 2011

Must Have the Turkey 

The only reason anyone should speed and drive like a maniac on a holiday. It's assumed the reckless driver must have been responsible for bringing the turkey and is running late to the dinner. Turkey can be replaced with any important holiday feast dish.

Damn, he must have the turkey!

Must Have the Turkey by daluved1 November 28, 2010

Must have been a computer-glitch 

A modern-day "get-out-of-dutch" statement dat is da standard --- and generally untruthful --- response when someone indignantly inquires why he was overcharged/invalidly billed, needlessly disturbed, wrongfully detained, etc., when he had specifically taken careful steps to ensure dat he would not have any problems in said area of his life.

If someone in authority tells you, "Sorry -- must have been a computer-glitch" or, "I dunno --- must have been an accounting error" in response to your resentfully asking him why you were incorrectly bothered, you should strongly suspect dat this response is merely a standard "canned answer" dat he gives to every protesting citizen whom he and/or da organization dat he represents investigates/contacts in error; in reality, off course, it's probably intentionally being done in da hopes dat they can gain unearned/undeserved monetary benefits, give themselves a fatter workload so dat they look busier than they actually are, drum up more business, etc.

Must have been a computer-glitch by QuacksO March 2, 2023

Definition must have at least 20 letters and 3 words 

stupid rule that urban dictionary made

i made a definition that good but it wasnt long enough so i had to make it longer

Definition must have at least 20 letters and 3 words by hornybastard March 14, 2005

You must have a runny nose

Sarcastically said to imply that it's recipient has been masterbating a lot, due to the extordinary amount of tissues in a trashcan nearby.

Also includes but is not limited to: paper towel, napkins, toilet paper, wash clothes, and handkerchiefs.

Jack: Yo I was so productive today

John: *notices a lot of tissues in trashcan* Yeah I'll bet. You must have a runny nose!

Jack: Haha bro I'm not sick!

John: Well then stop killing trees you wanker! *points to trashcan*

You must have a runny nose by Chillbro March 14, 2014