noun: they are little worm-like creatures that are covered in hair and live under your bed. At night they will crawl into your ear and take over your brain. The only way to avoid a case of space herpes is to launch yourself into and out off your bed by jumping. This is so you can avoid contact with them, as they tend to linger close to the edge of the bed.
Watch out that the space herpes don't get you while you sleep.