| Abbreviation | Definition |
|---|---|
| USA | Under Saudi Arabia |
| USA | Under Skirt Adventures |
| USA | Under Skirt Area |
| USA | Underused Stupid Abbreviation |
| USA | United for Size Advocacy |
| USA | United States of Adultery |
| USA | United States of Aggression |
| USA | Universal Surveillance for All |
| USA | Unlimited Supply of Arrogance |
| USA | Utterly Savage Anarchy |
| USAF | U Sorry Airborne Females |
| USAF | United States Army Faggots |
| USAIR | Unfortunately, Still Allegheny In Reality |
| USARMY | Uncle Sam Ain't Released Me Yet |
| USB | Ultimate Security Breakdown |
| USB | Ultra-Stupid Butthead |
| USB | Unusual Scientific Berserker |
| USB | Unusually Slow Bus |
| USB | Unusually Supportive Bum |
| USB | User Should Buzzoff |