Body vaping

Or ABV (auto body vaping) is Where you accidentally breath in your own fart and then sneeze. Also known as a reverse sniff.

Harold midway through his conversation let loose an SBD (silent but deadlyfart) which put his words to an end when the said SBD found its way to his olfactory causing him to breathe deeply the fart, leading to a violent poo particle sneeze-

Harold: "Ah dude! I'm totally body vaping!"