| Abbreviation | Definition |
|---|---|
| IBDOM | International Brotherhood of Dirty Old Men |
| IBEW | Idiots Being Electrocuted Weekly |
| IBEW | I'm Broke Every Week |
| IBEW | International Brotherhood of Easy Work |
| IBEW | Internet Bandsman's Everything Within |
| IBF | Incompetent Boxing Federation |
| IBLW | International Brotherhood if Lazy Workers |
| IBM | I Be Masturbatin |
| IBM | I Bike Moab |
| IBM | I Blame Microsoft |
| IBM | I Borrow Macintoshes |
| IBM | I Bought a MacIntosh |
| IBM | I Bought Macintosh |
| IBM | I Bought Monday |
| IBM | I Buy Macintosh |
| IBM | I Buy Maxtor |
| IBM | I Buy Memory |
| IBM | Ich Bin Mushugannah |
| IBM | I'd Buy Macintosh |
| IBM | Idiot Behind the Machine |