I'll show you...

[rebbonk]

In a train compartment, there are 3 men and a young woman. The four passengers join in conversation, which very soon turns to the erotic. The young woman proposes, " If each of you will give me $1.00, I will show you my legs."

The men, charmed by this young college girl, all pull a buck out of their wallet. The girl pulls up her dress a bit to show her legs.

Then she says, " If each of you gentlemen will give me $10.00, I'll show you my thighs,".

Men being what they are, pull out a ten dollar bills. The girl pulls up her dress all the way to her legs in full.

Conversation continues, and the men, a bit excited, have all taken off their coats. Then the young girl says, "If you will give me $100, I will show you where I was operated on for appendicitis." All three fork over the money.

Spoiler:

The girl then turned to the window and points outside at a building they're passing. " See there in the distance. That's the hospital where I had it done! "