Overheard and ridiculous: "You can get a masters degree in anything."

Dad:"He has a masters degree in poetry."
Sweaty teen son:"That's the stupidest thing I've ever heard. Like, you can get a masters degree in anything."
Dad:"Well, almost"
Sweaty teen son:"I bet you could get a masters degree in penis examination."
Dad:"Yes, that would make you a urologist."
Sweaty teen son:"I guess."