Here in Houston bugs can be a problem...
Once after a rain I was out training when a wasp got caught in my Camelbak. As I reached over my head with my left hand, I guess my right hand pulled slightly back on the handlebar. Next thing I know -- the front tire hits the curb and launches me over the front -- I landed on my head and shoulder in a mud puddle. I'd love to have that on video.
The next time I hit a bug it caught me in the chin strap and was buzzing something fierce. I was ready though, and unlatched my helmet strap and tossed it into the grass. -- no crash, no sting, no blood or bruises.... I just looked stupid!