| Unbearable: | Barren. |
| Unclean: | 1. tending to submit under duress. 2. huge effort made by the sibling of a parent. |
| Underwear (loc. adv.): | beneath what? |
| Undeterred (n): | nether skid mark |
| Ungrimmatical: | lousy English, innit. |
| Uniquality: | one caliber of performance fits all. |
| Universal Quantifier: | St. Peter. |
| Universe (n): | A short poem. |
| University (n): | Like, loads of short poems in one place, man. |
| Us: | Multiple Personality Order (see 'Is'). |
| User-friendliness: | The art of taking a perfectly good computer program, and dumbing it down enough for any brainless idiot to use. |
| 'Ut (n): | Cockney garden shed. |