The 33-year-old cut his set short 10 minutes into what was supposed to be an hour-long performance, performing verses from French Montana's "Pop That" and Gucci Mane's "We Be Steady Mobbin'" before stating “Don’t you ever, ever, ever ask me to do this again!” and making a quick retreat.
Organizers says it's not clear what angered Wayne and prompted him to leave the gig early.
“We are truly baffled by why Lil Wayne would do this in front of thousands of Cannabis Cup attendees – in total disregard for his fans – and are awaiting an explanation from his team.”
Wayne's contempt for the event - where judges and attendees sampled cannabis products from 13 categories including pure extracts, hash, kief, and rosin tech - may have stemmed from the oven-like temperature in the venue, which had an energy-sapping effect on the extremely high, dehydrated concertgoers, some of which booed Weezy before he left the stage.
The decision to ditch the show could've also had to do with the rapper's reported antipathy toward smoking weed: as MTV reported in 2011, the rapper was forced to get sober and clean after a stint in prison on gun charges, and has described his new, clean-living path as a "big difference" from the lean-sipping, blunt-smoking days of yore.
Representatives for Wayne have yet to publicly comment.
Banner Image: Rapper Lil Wayne performs at a California concert in 2013. (Randy Miramontez / Shutterstock.com)