Sheldon's Astrosmash Shirt
The other day I was sitting around, with Cletus, and I said, “Hey, Cletus, I sure do wish I had that black Astrosmash t-shirt, Sheldon Cooper wore in The Big Band Theory!”
Cletus replied, “Well, gee Vern, what is a Astrosmash?”
And I told him, “Astrosmash is a video game for the Intellivision videogame console written by John Sohl and published by Mattel in 1981.”
Intellivision someone on amazon still sells the shirts through their website.