| Abbreviation | Definition |
|---|---|
| IRA | I Rock Auld |
| IRA | Impossible To Readily Apprehend |
| IRAQ | Incredibly Rarely Asked Questions |
| IRBM | Inter-Region Beer Missile |
| IRC | Ironically Retarded Comment |
| IRC | Irrational Rhubarb Chompers |
| IRF | Invisible Robot Fish |
| IRF | Islamic Republic of France |
| IRF | It's Realy Fried |
| IRL | Impotent Racers League |
| IRL | Irrevelent Retirement League |
| IRL | The Icky Racing League |
| IROC | I Race Off Course |
| IROC | I Race Other Cars |
| IROC | I Ran Over Craig |
| IROC | I Reek Of Cologne |
| IROC | I Run Off Cliffs |
| IROC | I Run Off Course |
| IROC | I Run Over Children |
| IROC | I Run Over Critters |