They look like big little boys. There is no male expression in their face.
Men are big little boys. These are just men that are satisfying themselves with food, like Kings.
They are in a situation void of women or adult like decisions. Nothing wrong with being a "little boy" in that situation.
In most social situations people are in, there is somebody else at the table that changes things, but in this case there wasn`t. The conversation was lacking, but they were getting their satisfaction from the food, not the conversation. They had to concentrate on the food, and be a bit competitive in their eating.
You didn`t have the dirty old man, or the horny youth, the intellectual, the witty joker, or the babbling woman, at the table. It was just a bunch of guys who were there to eat like crazy, and enjoy their food, in the company of other like-minded people.
If they weren`t living up to their responsibilities, then maybe you could criticise them for being little boys.. It`s not nice, but maybe. But I think this was just a social situation you couldn`t relate to.