A group of guys and one girl are sitting together at a ball game. 
During the game the guys notice the girl knew just as much 
about the game as themselves, and are really impressed. After 
the game they ask her, "How is it that you know so much 
about baseball?"

She says, "Well, I used to be a guy and got a sex change."

The guys are amazed, but very curious about the process. 

"What was the most painful part of the process? Was it when 
they cut IT off?"

"That was very painful, but was not the most painful part."

"Was it when they cut off your balls?"

"That was very painful, but was not the most painful part."

"What was the most painful part?"

"The part that hurt the most was when they cut my salary in 
half!"