Yep! And I'm originally a Southern California product and down there, the hip cool thing to do is go someplace like a bar or trendy coffee shop and ... ignore each other!
In fact suffering from living in Newport Beach, I even did a bit of experimentation, Diane Fossey among the stacks of brie: I noticed in the market that women there would, upon making accidental eye contact, do a sort of turn-head-aside-and-up maneuver coupled with a facial expression that looked like they'd seen a seagull poop; to the extent of having seen the poop actually exit the bird up close. So! - to experiment with this gesture, I'd do it too when the opportunity presented itself to do it in context, occasionally achieving the rare and desirable Simultaneous Snoot.
People are SO interesting. This is one reason I love "working" in Santa Cruz. In fact one of the street people I've kinda befriended came up to me and asked me, as any bio-male will feel it his right and duty to ask. "are you a he-she, a she-he, or a she-she?" I replied that I'm a he-she on even days, a she-he on odd days, and when I've had too much coffee and gotta "go", I'm a she-she!
This last candidness and joking because I'm kinda transitioning in public, my "work" requires being out there talking with people, lots of verve lol. This means that the people on Pacific Avenue are getting to watch me become more manly over time, it's gonna be funny when I'm really fully male in appearance and I get to use The Force on them. By this I mean, the vast vast majority will be people who've walked by, seen me, but not registered me much, and they'll "remember" me as having been male all along. A few will think something like, "I *know* you were female, what gives?" and I'll tell them I was sick or something. A very very few will challenge me because it challenges their own sanity, they KNEW they saw a gal now they see a guy, are they going CRAZY?? Those are the ones I tell, "What? That's rediculous! You must have me mistaken for someone else, I've been male all along" etc while looking at them oddly. And thus the victor gets to rewrite history.