Experimenting

Question... okay so If a guy encourages if a girl likes you but you don't(I'm straight) and he jokes about letting her go down on me and says like maybe you will like it and says stuff like we all look the same in the dark. And I said to him like there is a difference between being with a girl than with a guy,so he says ooooh look at the experience talking so I said what,so he says so you've had a guy and a girl go down on you so I said no.... so he says then you wouldn't know(meaning if I would like it), does it mean his probably experimented before?