I've had many over the years, and quite a few were memorable... Starling upside the head (had just enough time to turn my head) feathers sticking outta my chin strap after that... Come over a small rise in the road at dusk to find three deer standing in the road (good thing I had 'air horns'... Deer poop all over the road

)...
The highest 'pucker factor' came from a spare tire that dropped out from under a pickup truck, in front of me, on the freeway one evening... Lotsa traffic, saw it drop, it slid down the road like a hockey puck until it caught an edge... Lemme tell ya, a tire will bounce with all the predictability of a football when moving 65mph... I managed to get around and passed it, but judging by the headlights in my mirrors, the cages behind me were not so lucky...
Black Dog