George Thorogood and the Destroyers were a blues rock band that started in 1977. Their classic hits Bad to the Bone, and One Bourbon, One Scotch, One Beer, are probably some of your dad's favourite songs
The tee is from the bands 1990 tour, and features their classic Viper graphic on the front. It has an unknown size on the screen stars tag, but fits like a small/medium
Measurements are:
pit to pit - 19.5”
length - 26.5”