The origin of 'Assho-ken'?

Came to eat at Taisho-ken, which is said to be the inspiration for Assho-ken. It's super crowded~ sweat I can see Soy-kun and Oyassan (hallucination) (big lie) I actually wanted ramen, but it's too far from work and I felt like I wouldn't make it in time for my shift, so I got gyoza instead. I want to try again next time!