So I was walking back home from work crossed the street in front of a car full of girls, I did not notice them at first as I was checking out funny gifs on reddit and this one girl shouted "my friend thinks you're cute" and I turned to look and one of the girls was covering her face and the other 3 were laughing...

I didn't know what to say or how to react so I just gave them a thumbs up and carried along on my way...

Looking back I think I should've gone up and said something, right?

Edit - Ah man, you live and you learn! Something like this has NEVER happened with me before, I let a good opportunity slip because of not being ready! Have to be in the zone at all times, even on the walk home!