The gasses found in Jupiter's atmosphere (ammonia, methane, etc) can cause brain damage, so those who go to Jupiter do, indeed, get more stupider. amirite?

I bet there's a lot of gas in Uranus

but the real question is are there cars on Mars

Religion is the best gas on earth to make people stupid

lotta girth on earth

An astronaut going to Jupiter,
Found gases there making him stupider.
His girlfriend on Earth
Said his intellect's dearth
Was so drastic, he no longer suited her.