Botfly - One Nasty Bug You Don't Want to Meet in a Dark Alley

(CBS) Ever wonder about all the random terrible things that could happen to you?

Here's one.

Have your body invaded by a botfly.

PICTURES: 11 Most Terrifying Parasites Ever

Botflies aren't easily confused with common houseflies - they're hairy and about twice as big. They lay their eggs on a mosquito, which then lands on a person. Once hatched, the larvae invade the skin of the unlucky host (as seen in this graphic).

Doesn't sound good. It gets worse.

The babies proceed to eat their way to the muscle, leaving a sore around the breathing hole they make in the skin.

If that wasn't disturbing enough, Infected people report being able to feel and even hear the maggots moving about. Surgery is often necessary to remove the organisms.

The good news is catching one of these critters is extremely unlikely.  That is unless you are British explorer Ed Stafford, who recently survived a 4,200-mile trek down the length of the Amazon. One of the horrors he said, was a botfly burrowing into his head.

Ouch.

Want to see more badies to avoid? Check out the slide show? 

PICTURES: 11 Most Terrifying Parasites Ever