A short-term testicular problem among male astronauts after re-entry in the atmosphere. The low level of gravity exposure in space makes the cubic hairs "float," thereforefore after returning to Earth, they tend to remain in the upright position for sometime weeks at a time.
Astronaut 1: Hey Niel, how was it in the sack last night?
Niel Armsrong: Horrible. I had--- spaceballs.