| Abbreviation | Definition |
|---|---|
| IBM | I'll Buy Macintosh |
| IBM | I'm Becoming Mac |
| IBM | I'm Being Mended |
| IBM | I'm Bummed Majorly |
| IBM | Imbeciles Believing in Mediocrity |
| IBM | Immediately Back to Middle ages |
| IBM | Important Bone Monster |
| IBM | Incompetent Baltimore Moron |
| IBM | Incredible Barfing Man |
| IBM | Incredible Business Maiden |
| IBM | Incredibly Bad Machine |
| IBM | Instant Bug Machine |
| IBM | Intel Bill Macintosh |
| IBM | Intel, Bill, MacIntosh |
| IBM | Intelligence Behind Machines |
| IBM | Intelligent Business Machines |
| IBM | Intentionally Bettering Many |
| IBM | Intercourse Beats Masturbation |
| IBM | International Bad Marketing |
| IBM | International Bad Marking |