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.
The sudden supply of bodily gas that uccures after dinking a bottle of robitussin
the horrible gas one receives after consuming large amounts of robitussin in order to get high
francis: oh man whats that smell?
Bruce: Oh sorry, i'm robotripping, but i also got the robofarts
Francis: Man those robofarts is nasty