I say whistle back and cat call at him next time. Just teasing, but, it can be funny to turn the tables. I know when I was in South Padre Island (here in TX) for my nieces' spring break, that's what we did. It really threw guys off. But, that's a completely different atmostphere. It was me (I'm 27), my niece (18) and our friend, Lisa (21). And, guys would drive down the strip, aptly named Padre Blvd, and, drive about 10 mph, honking, whistling, trying to throw beads (did they think it was Mardi Gras?!), making retarded comments, slowing down to see if we needed a ride, etc....It was so funny! But, yeah, by the end of the week, we were yelling right back at them. Anyway, I say just ignore him, honestly. But, do you like this guy at all? Just wondering, cuz it's hard to give good advice if it's not clear what the vibes may be.