Do you sell golf balls?

So... I'm at a McDonald's - located by the border of IL and IN. And I'm standing in line to order my sandwich, when this guy saw the way I was dressed (in my Srixon rainsuit) and asked me "Do you sell golf balls?" I smiled while deep down I was laughing quite hard. "No", I answered politely... "I play". And he continued to ask... "Professionally???" Almost seemed like he didn't believe me. I said "Yes, we just got done in Lake Geneva". Thankfully by the end of my sentence, he got his order and went away.