Hey there Yeah I'm BJTHOMPS wife, and when I hold any of ours at some point or another they rub on me...I personally love it because it makes them seem so dog or cat like. I have figured out with atleast mine this occurs when they are trying to slither onto me when I am either putting them away and there trying to stay out, when there sliding across me while I hold them etc.

So I wouldnt worry about as long as he is healthy other wise.