I was on snopes looking up something else and came across this story and it was true. I have never heard of it but many do this game.
I'll have to remind my kids to not shove large amounts of food in their mouths. No matter what it is, candy, chips, MARSHMALLOS. Not even as a funny game. I don't think i'll tell them there is this marshmallow stuff your face game because that could be to tempting. I'll admit it seems like a cute game. its got a cute name. I totally see slumper party written all over it.