Stay classy, Joe Jonas.

The middle (and recently singleJonas Brother turned 25 on Aug. 15, and he celebrated in a big way, throwing an all-out birthday bash in Las Vegas -- complete with a lap dance from two little people strippers.

In a NSFW video obtained by TMZ, Jonas is sitting onstage in a chair as the world's most random assortment of dancers surround him -- we're talking a costumed Cookie Monster and Barney -- as two small strippers grind all up on him. If you think this scene looks like something out of one of Miley Cyrus' Bangerz tour shows, it seems like that was the theme they were going for … especially considering that one of the ladies is dressed in Cyrus' 2013 VMAs attire, complete with a teddy bear onesie and buns all across her head.

At one point, one of the strippers climbs on Jonas' lap and does a full-on handstand as he laughs and snaps pictures on his cell phone.

It's definitely a birthday to remember, that's for sure.

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