Robo fart 

The sudden supply of bodily gas that uccures after dinking a bottle of robitussin

AHHHH!......Robo fart

Robo fart by Johnny Robitussin August 25, 2003

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 by LCeezey January 11, 2009

robofart 

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

robofart by Rob E. Tussin October 15, 2009