In this TMZ video, you can see the birthday girl getting playfully hit with a nightstick wielded by a stripper before he puts her in the hot seat as the crowd cheers.
Kendall looks equal parts amused and embarrassed by the antics.
The E! reality star and model's sister Khloe Kardashian also turned heads with her own dirty dance moves at the bash, where she was caught on camera twerking on former boyfriend French Montana.
In yet another TMZ video (were they invited to the party or something?), we see Khloe looking awfully cozy with French.
So to recap: Kendall got a lapdance, Khloe gave one and a good time was apparently had by all.
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Gallery | Kardashian + Jenner Memes