Help! Psycho stranger person!! xD
I'd smile and try to get to know you...Officer. x)
I'd sit in a corner and read a book, maybe talking every once in a while.
Late: I'd steal your dog and cuddle it.
Feel terribly sorry for your hideous cat, then steal your lolly.
Edit: Whoops, late post. I'd steal your shiny flipflops...
I'd ask to try on those glasses, then start talking to you about... anything.
Realise that we have the same goggles. Then ask to trade with you anyway xD