I first knew the show was a hit when I walked into school and a kid was wearing a Bart Simpson T-shirt. Fox had an endless supply of clever slogans, man. :
The Simpsons Men's Bart Squishee Brain Freeze Graphic Print T-Shirt, M - Walmart.com
Red t-shirt worn by Bart Simpson in The Simpsons (Season 31 Episode 22) | Spotern