UPDATE: HERE’S THE VIDEO!

Joaquin Phoenix’s bizarre antics continued Wednesday at a hip-hop show in Miami.

Sporting a disheveled dark suit and smoking a cigarette, the scraggly-bearded Phoenix, 34, got on stage around 1:50 a.m. at the Fontainebleau Miami Beach hotel’s nightclub.

Nodding to the music, he was barely audible as he began rapping to a beat played by the DJ.

Near the end of his first number, Phoenix walked to the edge of the right side of the stage and called out an audience member whom he thought was heckling him.

“Bitch,” Phoenix yelled. “This is a $3,000 f—–g suit!”

He then jumped into the crowd as security rushed after him.

It was unclear whether the two men scuffled, but security dragged Phoenix away as the crowd chanted “Joaquin! Joaquin! Joaquin!’”

His brother-in-law, Casey Affleck — who is making a documentary about Phoenix’s career leap from acting to rapping — filmed the entire incident.

Phoenix’s wacky antics — which include a bizarre Feb. 11 Late Show With David Letterman appearance — may be part of an elaborate hoax.

But Paul Dobransky — a relationships expert and author of The Secret Psychology of How We Fall in Love — recently told the Los Angeles Times that Phoenix could also be schizophrenic, pointing to his “socially inappropriate behavior”

His rep denied the claims: “How absolutely inappropriate for a doctor who has no personal interaction or relationship with someone to diagnose them.”

Still, fans can’t get over Phoenix’s unkempt appearance.

A club-goer Wednesday told Usmagazine.com, “He looks like he needs a shower. Is he doing a Geico commercial? He looks like a fancy caveman!”

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