Having been riding for about 40 years now, I've got a few.
I'm going up the hill on Barloy Canyon road out of Laguna Seca, years ago (I lived there for 39 years, 6 miles from the track), and a bee goes into my helmet and zaps me right behind the ear. And I'm allergic to their stings. I stop, take my helmet off, and my brother or buddy Al (I forget exactly who was there, it might have been both of them) says, "Wow, I can see your head swelling as we are standing here." And sure enough, I can't put my helmet back on. Big ole lump on the side of my head. So I figured I'd better get home as soon as possible in case something else besides swelling started to happen (it usually didn't), so I head out the East Garrison gate at Fort Ord without a helmet (and we have helmet laws). The California Highway Patrol stops me at the gate, I point to my head, he goes "Ewwwww", and says, "Get to a doctor immediately", and I guess he radioed ahead, and all the rest of the cops all the way to Marina let me on through without a helmet. I went home, took some Benadryl and I was OK.
Another time, my brother, Al, and I were going through King City, the back way into Hollister. First, we are smoking along, I was on a 900 Ninja, my brother a GS1000, and Al a GS1100. We are booking down Bitterwater Canyon Road, way over 100, it's a big, fast, wide road, when Al or my brother pointed up, and there is an airplane pacing us, that said California Highway Patrol on the bottom of the wings. So we backed it down, just waiting for a road block, and the plane peels off. Never did see any cops out there. But, on the same trip, we get to Paicines. Going right at Paicines, which heads over to I-5, (we used to just go down any old road to see where it goes), I get in the lead, and I'm rolling pretty good. I come around a turn, and before I realize it, I'm in the middle of a herd of fucking tarantulas (I find out later that they migrate like that a month or so every year). There were thousands of them. And they are crunching under my tires. Meanwhile, my brother and Al are stopped and just cracking up. I forgot to mention that I have a spider thing going on. So, I'm thinking that one of these bastards are going to get flung up on my neck, and I'll just shit myself and die, right there. But I managed to creep through the yellow goo that was coming out of the crunched ones, and some how made it through the rest of the day. I probably still need therapy for that incident. It probably led to drug abuse and all kinds of other issues.
I've also hit a dog once, and I really like dogs. Killed it instantly. I felt pretty bad about that one.