You're driving along enjoying the fresh air and the freedom of the road. Your journey puts a big smile on your lips. A bug travelling the other direction gets in the way of your face and "Whap!!" It hits your glasses, and if it was a particularly juicy critter; the little guy has managed to jam some of that tastiness into your teeth. Nothing to do but wipe, spit, and keep on driving! Yum!
Congratulations! You've earned a Bugs in your Teeth Badge of Honor!