Haha, can I buy a vowel?

Thank you for using idioms to talk with me. I learn a new one from you, and find a funny example as follows:

PERSON A: "I have a friend who has a friend who's friend has a friend that has a friend that knows somebody who knows a guy who knows a girl who's girlfriend has a boyfriend who went to a really bad doctor who's doctor's doctor's doctor's doctor ate a BigMac and flatulated on top of his flatulence until he fainted"

PERSON B: "Can I buy a vowel?"