A Detroit Sundae
You go to take a dump and find another person's mess still there. You now have to take a dump in a Detroit Sundae. It's like taking a dump in a trash can, just gross and full of bad choices.
I went to take a dump and found a previous person's mess. I now have to take a dump in a Detroit Sundae.
I walked into the bathroom and saw a mess that looked like it had been there for years. That's a Detroit Sundae.
I tried to take a dump and found someone's old business in there. That's a Detroit Sundae.