13 Sep Tweet Mod (n): A device or attachment that has been made into a personal vaporizer. Mods are typically used by advanced vapers as they require more frequent maintenance and a deep understanding of the mechanics of vaporizers By Seif Ascar, cigarette, device, ecig, ecigarette, electronic, how to vape, mod, start vaping, vape shop, vaperology, vaping, vaping device, what do you need to start vaping,