What the....?

Today while driving Amos threw up all over himself. I would feel bad for him except he did it on his own. Yes, he sticks his finger down his throat to the point of gagging and then laughs. What is the deal with this?? I mean, yeah he's a little chunky but it seems a little early for purging. He didn't even care about throwing up, he just laughed harder. So now there is barf all over the car seat cover I just cleaned, and I'm sure by tomorrow the smell is going to be absolutely delicious.