Green’s Dictionary of Slang

tuss n.

[abbr.]

(US drugs) Robotussin; also as v., to take Robotussin for its narcotic effects.

alt.drugs (Usenet newsgroup) 20 Jul. 🌐 The best way I’ve found to ingest the stuff is to mix 4 oz. of Tuss with 4 oz. Sprite and gulp wait until your stomach settles and repeat. [Ibid.] 7 Sept. I like the fact that people have been saying good things about ’tussin. I tussed for years and no one could understand my love for it and said it wasn’t a ‘real’ trip.