No idea what to do, but had to post since apparently I was a chipmunk at meals. Both cheeks, stuffed full, wasn't allowed to leave the table till I swallowed, there are stories told of me sitting there for an hour and a half like that. (I might be a bit on the stubborn side). I was (am
) a slow, picky eater and there was a lot of fuss made about meal times. I often felt very picked on, so perhaps that was my way of being 'in control'.
If I were you, I'd ignore it. If you make an issue out of it, it'll become an issue. He's old enough to handle his food well in his mouth, he's probably just experimenting with how it feels, maybe it gets a reaction from you, etc. That's my 2 cents, and worth about that I'm sure!