Meet the Coopers

I had the pleasure of meeting the Cooper family on a very special weekend excursion here from Arizona. We went to La Jolla for some family portraits and then met up the next day for the main event. I wasn't sure that my jokes and silliness would work on older kids as well as they work on little ones, but I think the boys would tell you my best, okay only, joke was hilarious. Right guys? Guys? *crickets* not unlike the original response to my funny joke.

Can you guess what would have enticed them to drive to San Diego? (other than my stand up skills)
You'll just have to check back tomorrow to see what it was.