John goes to the art gallery. He the buys a picture that he does not want. Why?

Cause he got it for his mother.

nude self portrait. picture of his ex-wife. It is covered in mold. A fraudulent copy he soldas someone else's work. he knows it had been stolen and on and on

Your hint doesn't make sense. If he didn't want it in the first place, then he obviously wouldn't want it rolled up.

He is buying it for someone else, and it's rolled up in a tube for safekeeping until he gets where he's going. I'm really not sure it doesn't make a whole lot of sense the way it's stated. If it's rolled up and he doesn't want it, then why is he buying it in the first place?