Green’s Dictionary of Slang

set trip v.

also trip
[set n.1 (1b) + trip v.1 (2e)]

1. (US gang) to attack another gang; thus as n.

[US] Snoop Doggy Dogg ‘Murder was the Case’ 🎵 Just remember who changed your mind / Cuz when you start set-trippin, that ass is mine.
[US] Coolio ‘Gangsta’s Paradise’ 🎵 I really hate to trip but I gotta loc / As they croak, I see myself in the pistol smoke.
[US]P. Beatty White Boy Shuffle 100: Take a set trip, load the clip, cruise the strip, give a punk-ass buster a hellified fat lip.
[US] Dr Dre ‘Bitch Ass Niggaz’ 🎵 No mo’ talkin, I’m walkin and I’m poppin the clip / Glock on the hip, set-trippin dippin an’ shit.
[US](con. 1990s) in J. Miller One of the Guys 86: ‘Talk about [...] who’s tryin’ to trip, who is after, who we’re after’.

2. (US prison) to move from one gang to another.

Austin American-Statesman (TX) 14 Oct. 9/4: Texas Prison Gangs Slang [...] Set tripping: To switch from one gang to another.