A fork of Rural Dictionary
Undeserved Sense of Self Importance When a person believes and acts as though they matter more than they actually do.
John A: I'm kind of a big deal. John B: Wow, someone's got a serious case of the USSI.
Either a person that cannot complete education at a 6th form. Has no swag. Is a bitch. Cannot play football.
Hey look at that guy in his shit trainers, he's an Ussi Sheikh
The act of adding "Ussy" to the ends of Random singular words, combined words, etc. and making mean whatever you want it to mean
Ussy-Latin: "Goku" - Gokussy "Food" - Foodussy "Thot" - Thotussy "Robot" - Robotussy or Robussy "Bones" - Boneussy