Green’s Dictionary of Slang

gesuip adj.

[Afk. suip, to drink, used of an animal]

(S.Afr.) drunk.

East Province Herald 10 May 17: No kids fighting; no ouma screaming at them and the old man getting gesuip [DSAE].
T. Eprile Persistence of Memory 163: The rest are just gesuip on Klipdrift, a swig of which Gidding now offers me.
A. Schuster Foolish Delusions 178: Sebastian smirks, ‘She was too gesuip, too drunk to see anything’ .
[SA]Mail & Guardian (Johanneburg) 26 Feb. 🌐 Gesuip — very drunk.