headlights blew out

[hotmilk400]

while the title sounds boring, i cant figure out how i blew out both of my headlights at the same time. i was getting ready to go home from work, and when i turned my lights on, i heard a pop, (i think) , and the lights never turned on (i didnt even take notice) i drove down the road, and was like, hmmm.. its really dark.. and i pulled over, and both of my headlights had blown at.. i thought it was a fuse, so i checked for like 30 minutes in the freezing cold. all the fuses are fine, including the fuses for the headlights. i thought maybe it was a relay then, but i couldnt check on the side of the road. then i was like, well, let me check the headlights.. of course, both headlights are black, and you can see the filiment is broken inside.. has anyone ever heard of BOTH headlights blowing at the same time??? i will replace them tomorrow, and hopefully will last, but is there some kind of problem? or was it a freak occurrence?

haha.. i dunno.. i am an electrician, and nothing makes sence to me, but i dont know a whole lot about the electrical system in cars, but i know enough to know that it seems almost impossible to blow both headlights at the exect same time.

it was very cold outside, about 20 F , but that isnt that cold .