The Moon
From Homestar Runner Wiki
The Moon is a popular destination of the people of Free Country, USA. This is where Strong Bad likes to play tennis with the Coach Z.
Strong Bad tries to fly Bubs' Concession Stand there after drinking a bottle of soy sauce in the email "personal favorites". He also announces his intention to retire on the moon after stealing The King of Town's crown in the Strong Bad Is In Jail Cartoon. Also, in A Decemberween Pageant, a computer Strong Bad thinks can help them is on the moon. It's a moon computer.
The flavor of Fluffy Puff Air Puffed Sugar Delights will also send you to the moon, as seen in the toon, "Mr. Shmallow".
You can click on it for an Easter egg in Pumpkin Carve-nival.
1-Up walked to the moon once, where he met Nebulon, who seems to live there.
Strong Bad said to the cheat that they could retire "To the moon"