I am 6'4", 220lb, sport a black UK whenever I can.

Best positive experience -
Girl, shouted across street - "Whaddya wear under that?"
Me - "Boots!" (of course)

Best negative experience
Young punk - "Hey man, you a F****T?"
Me - "Why, you cruisin' for a piece of a**?"

His friends all laughed at him, and I walked away smugly.