Sharing a joke with a stranger

Had my laugh of the day between Half Moon Bay and Santa Cruz. I was just making a point about how surfer guys gain some attraction points by just being surfers. To illustrate my point I jovially enacted how I would greet the next Californian guy, "Hellooo, do you surf?", all this half yelling as we girls rode rode side by side on the shoulder. Just then a biker passes us on the left, perhaps biking from that last surfing pullout 2 miles back, and gives us this knowing grin. He totally heard me- how far back he'd been in on my argument I don't know. I dropped my head in shame as he cruised on to SC as the girls hooted at my timing. Wish I could've caught up to him...-Wendy