My son has recently taken to stuffing his hand in his mouth to the point where he nearly gags. I pull it out and try to give him stern looks and a stern reprimand, but all I get in return is laughter and more hand-in-throat business. And when he laughs and is so excited about his game it is hard for me to be very stern, so he thinks it is funny and the cycle continues. This isn’t the only behavior that I try to correct but end up being laughed at (and then laughing as well). I am sure that he will grow out of it, or forget about it and eventually he will learn the difference between when I am playing a game and when I am disciplining, but until then it is a matter of vigilance and patience to keep the boy from making himself throw up.
Kids are so funny sometimes.