There's just no atmosphere
What is the difference between a GOOD and a BAD girl? A GOOD girl goes to a party, goes home then goes to bed. A BAD girl goes to a party, goes to bed then goes home.
In the punchlines.
A problem. What do you call when 3 terrorists are on the moon? A problem. What do you call when all the terrorists are on the moon? A solution.
Because it was full.
It was an oakward experience.
You planet! (It won't turn out well though because it has no atmosphere.)