| Acronym | Meaning |
 | NFI | Not F****** Interested |
| HUD | Head-Up Display - Housing And Urban Development |
| SIAM | Society For Industrial And Applied Mathematics |
| XS | Xiaolin Showdown |
| EBE | Extraterrestrial Biological Entity |
| ISU | Integrated Sight Unit - International Skating Union |
| CX | Christmas Island (ISO 3166 Digram) - One Hundred And Ten (in Roman Numerals) |
| SEK | Swedish Krona (ISO 4217 Currency Code) |
| DPMO | (U.S.) Defense Prisoner Of War/Missing Personnel Office |
| HALO | High Altitude Low Opening (parachute Jump) |
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