Usually, if someone is talking trash like that I'll let my bowling do my talking. Don't know exactly why, but it seems to light a fire in me and my scoring goes way up. I wish I could do that all the time.
If you let that talk get to you, then he has accomplished his goal and got you thinking other than the task at hand which is to bowl.
I only carry two balls and a spare ball going to league. The conditions are fairly even week to week so a large variety of balls won't help me any. On the rare occasions when idiots have asked why I bring two and only use one of them, I have politely explained it to them. I tell them I decide which ball to use based on who I'm bowling. I'll then point to the one I'm not using and say I use that one against the good bowlers. This one here I'm using, it's for bowling against idiots.
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"Beer is proof that God loves us and wants us to be happy." Ben Franklin
Enjoy,
Bob