Michelle Rodriguez & Cara D. Grind Out a Threesome with Beyonce's Dancer

3/7/2014 8:00 AM PST

Michelle Rodriguez
and Cara Delevingne spiced things up last night ... making a hot man sandwich by twerking and grinding all over a dude in London.

M-Rod and Cara hit up Chinawhite nightclub after Beyonce's concert, and took over the dance floor with two of Bey's male dancers -- but the highlight was a menage a trois. 

Because sometimes life is awesome ... the ladies ended up straddling one of the guys, and let's just say ... his legs are now very familiar with their crotches.

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