I think your current strategy is sound. Listen and don't react. He's trying to get a rise out of you, so he confirm in his own head ideas he has about you and your character. Either that or you can totally agree ( uhum, yeah) with him and render his weapon useless. Hard to start an argument with someone that agrees. Of course you will have to be secure enough in your own person to take this route, and really affirm your own worth.
BITS Me-51, WAS-52 Kids 2 M-26yrs, H.left 2009, 2 more Bomb drops, Reconnection spring 2013 Change is inevitable, personal growth is a choice. Love is a action and choice you make, every day.
Hard to start an argument with someone that agrees. Of course you will have to be secure enough in your own person to take this route, and really affirm your own worth.