My boyfriend always kills the moment by making stupid jokes?

We will be getting really into it when all of the sudden he does something stupid that only HE finds funny. For example, we will be kissing when suddenly he will pretend to be a sloppy kisser because he knows how much I don't like that, and he finds it hilarious. Or he will lick my cheek or nose or something, which i think is gross as well. Or just when I'm turned on and ready for sex, he will pretend to fall asleep. Obviously only for a few seconds, but I still find it extremely annoying, I tried to say in a somewhat joking way, "Do I look amused?" but he just keeps doing it. Wouldn't this bother you too? What should I do?