What kind of candy do astronauts eat in space?
Mars bars.
What kind of candy do astronauts eat in space?
Mars bars.
Alright, listen up, buttercup. This joke is playin' on words, see? Astronauts are in space, and Mars is a planet in space, and "Mars" is also the name of a candy bar. So, instead of just eatin' normal candy, they're eatin' candy that reminds them of where they are. Now go back to watchin' TV, you simpleton.