The 41-year-old was spotted letting loose at Pilo’s Tequila Garden in Miami for ladies' night on Thursday, with insiders telling us Lamar was "drinking Hennessy."
Radar has obtained photos showing Khloé's ex-husband at his VIP table.
In the pictures, a sweat-drenched Lamar is seen holding the hose of a hookah in one hand and his cellphone in the other.
In front of the former basketball player -- who nearly died of an overdose in 2015 -- laid several bottles of hard liquor.
Lamar stopped partying for a moment to pose for the cameras. He rocked a black t-shirt that read, "not a copy" -- a clear swipe at Khloé's most recent ex, Tristan Thompson.
Sources tell Radar, Lamar had an amazing night at the high-energy club.
Sources say besides "drinking Hennessy" at his VIP table, he dropped by the treehouse DJ booth and wasn't trying to hide despite the drama.
We've learned Lamar also indulged in Pilo's tacos famous platter, chowing down on classics like Pollo Adobado, El Tiznado, El Carnal, and El Rey tacos.
While Lamar was surrounded by ladies, Khloé Kardashian was nowhere in sight.
Lamar claimed in May that he had been five years sober.
His appearance at the club in Miami comes just days after Tristan made a threat against him after Lamar got caught in the Keeping Up With The Kardashians star's thirst trap.
As Radar reported, Khloé's ex-husband dropped a pick-up line on a scandalous photo showing her taking a shower while wearing a bikini.
When Lamar called her a "Hottie” and left a bunch of heart-eyed and fire emojis, Tristan fired back
Tagging Lamar, Tristan wrote, "God brought you back the first time. Play if you want, different results," referencing the ex-NBA player's near-fatal overdose.
Following Tristan's threat, Lamar responded.
“He don’t really know me,” Khloé's ex-husband said. “So he don’t really know me. Like that could have turned really ugly.”
“He’s a Black man. He’s in the NBA, so we are fraternity brothers at the end of the day. I’ll just leave it there," he continued. "He made a mistake by saying that."
Khloé has remained silent on her exes' public beef.
Radar has reached out to Lamar's rep. So far, no word back.