NASA's Farts

Listen up, buttercup. This joke is so simple, it's like trying to teach a rock to roll. NASA, which is like, space headquarters, farts... but instead of normal farts, they're asteroid farts, get it? Asteroids are space rocks, and "ass-teroids" sounds like, well, you know. Since you're probably still scratching your head, let's just say your brain works slower than a snail on a Sunday.