21 Savage Wants to Make it Nasty with Kylie Jenner

21 Savage wants a crack at Kylie Jenner ... and also handing out backhanded compliments to Tyga.

Savage and his boys hit up Ace of Diamonds Monday night, and when Kylie's name came up he told our guy EXACTLY what he wants to do with her. More like what he wants to do TO her, actually.

As for Tyga being in the picture -- Savage gave him props ... sarcastically, we think.

T-Raww's officially on notice.