robo-fart
After drinking large amounts of robitussin to get high you usually get gassy as hell and get what I like to call the robo-farts. The day after if you're still afterglowing you'll be ripping robo-farts all day.
Holy shit can you guys smell that? I got some fat robo-farts.
Robo fart
The sudden supply of bodily gas that uccures after dinking a bottle of robitussin
AHHHH!......Robo fart