In season 7 episode 8 called “Mother Simpson” the power plant employees are spending their Saturday picking up garbage, as some sort of community service I presume. Homer decides to get out of it by faking his death. Eventually he goes to straighten things out and has his long lost mother walk back into his life. However, she has a shady past that forces her to flee Homer’s life yet again. During the beginning where the employee are picking up garbage, one can be seen picking up a straight jacket with “New Bedlam Asylum” on it. This also happens to be where Homer is sent when he wears a pink shirt to work in a different episode that absolutely exists.

Here’s the link to the product as a pin, but you can view the design on multiple items if you’re interested.