1. To have laid, as with to own intercourse. Also, the direct translation would be to explode your penis in a vagina. AKA 'B (up arrow) D' or the many reknown way of writing its to draw a-bomb, with an (up arrow), then a dildo, or a penis-like object.2. Utilized as slang for everything, and something.3. Could be combined with various other terms, like "bomb up shop", "bomb up school", "bomb up poop". Beginnings are just known to Adrian Pierce and Adam Simpson of HHS Class of '05.