Drake Makes Tristan Thompson Best Man in Polygamy-Themed 'Falling Back' Vid

Drake's first music video from his new album is a giant not-so-inside-joke -- and while he and Tristan Thompson are laughing ... Khloe Kardashian is definitely not. 😑

Drizzy dropped the vid for "Falling Back" Thursday night, and it's a full-on wedding party, complete with him saying "I Do" to his beautiful brides.

Yes, plural ... 23 gorgeous women, actually -- and the guy getting him ready for the big day is none other than TT, who's clearly leaning into his rep for infidelity.

TT tells the rapper, "Doesn't feel right, we scrap it, we go home," while making sure the guy's looking fresh for his 20+ brides ... clearly poking fun at Tristan's multiple cheating scandals, and Drake's timing for this video is pretty on the nose!

As you know, Thursday's season finale of "The Kardashians" featured Khloe's heated reaction to finding out about Tristan's affair with Maralee Nichols ... who he got pregnant.

Khloe says "You either wear a condom, get a vasectomy, or you don't f*** random people that you meet in other states. It's not rocket science".

So, the release of "Falling Back" -- the first single from his "Honestly, Nevermind" album -- kinda plays like a Kardashian's sequel or spinoff. TBH, it's brilliant marketing -- unless you're Khloe -- and Tristan's clearly in on the joke.