Sound Advice?

I bought a banana the other day at Whole Foods down in the Pearl. I was hungry, it would do the trick, and it's the only place you can get a banana that wasn't picked and put in the produce aisle 3 months before it was ready to eat.
So I was eating it out front and some tweaker-type guy (you know the type: 45-years old on a kids BMX bike, perpetual greyed whiskers and a cigarette in the mouth, mesh cap, some faded and crusted t-shirt) was unlocking his child bike and looked at me and said, "Never let your father see you eat a banana."
I just looked at him, half a mouth of unchewed banana in my mouth. I had no idea what he was talking about. Did he think my dad had a potasium allergy, a phobia to the color yellow, a... OH!
Then it struck me as he pedalled away. All I could offer as a come back or a resonse was a stupefied, "Huh?"
It was a slow day. If I were quicker on the draw I could have thrown back the fact that he probably sucked on a cigarette more than I chewed on bananas. Let's hope I never get into a line of work where I have to deal with hecklers.