What does "I ate enoki mushrooms and corn for a week straight" mean?

This is a spoof on the Internet, because enoki mushrooms and corn are not digested, and what is eaten will be excreted. It can be used repeatedly, so you know...

I ate enoki mushrooms and corn for a week straight, which is from a spoof joke below:

"I lost all my living expenses at the card bar last week, which is terrible"

"Ah? What did you do?"

"I ate enoki mushrooms and corn for a week in a row"

"Enoki mushrooms and corn are not cheap, you have no money to eat this ?”

“Oh, brother, you don’t understand”

God’s comment: Enoki mushrooms and corn are not digested, and they are still the same when they are pulled out