Conor McGregor got fully naked for his role in the new "Road House" movie ... and we can't even front -- the dude has a nice ass.
The UFC superstar's cheeks make a brief cameo in the new Prime Video project that dropped on Thursday ... when at one point, Conor shows up wearing nothing but a smile on his face.
We're not going to reveal any spoilers -- the flick literally just dropped -- but considering Conor has talked about the nude scene in the promo tour leading up to the release, it's fair game to talk about the dude's peach.