I don't ever lay hands on him, I dont think that is a good discipline.

There isnt anything psychological or physical. He saw someone breifly after, stuff happened before with me.

It's simple, the sound he can make when he puts his fingers down his throat? He thinks it's funny.
So he does it over and over, and then ends up puking, but not on purpose.
He doesn;t puke everytime. It is so gross. You would think he would stop doing it, since it's kinda a self punishing behaviour.

Srsly? Doesn't is burn and feel unpleasant? sheesh.