A fork of Rural Dictionary
"The Must" or being "Musty" is a feeling one has after getting really high. It's a feeling one may experience when they feel as if they are watching them selves in third person while still looking through their own eyes.
Bro 1: "yo I got hell high last night and I'm feeling really weird today." Bro 2: "bro your musty!" Bro 1: "man that is exactly what it feels like!" Bro 2: "yeah man you got The Must!"
A phrase normally used when an outsider tells you something crazy that just happened but in actual fact it is a common occurrence in your strange fucked up life and just like any other day.
Phil - "Holy crap! Geoff just tripled himself in the middle of the parking lot!" Kevin - "It must be Tuesday."
The world's most condescending phrase.
Girl: I'm getting fucked up tonight! Guy: Must be nice.
promise to oneself saying: "I shall not masturbate"
Someone sends you a picture of a hot chick and you reply back: "must not fap". Simple :)