It means that hes thirsty for some muffin, you know what I mean, hes secretky crushing, or its just a habit
That can mean almost anything. It can mean he's interested in you, or that he thinks you did something funny, or that he is sharing a secret with you, or telling you a funny story, etc. So we're not going to be able to tell you for sure what he meant by it or what was going on in his head.
Its meaning he wants your body or he just wants you for a night of sex and then hes goes to a different girl ive had the same thang happen to me