Darth Vader PWNs his son

I was watching the Return of the Jedi, and the following sequence occurred.

Darth Vader: A small rebel force has penetrated the shield and landed on Endor.
The Emperor: Yes, I know.
Darth Vader: My son is with them.
The Emperor: Are you sure?
Darth Vader: I have felt him. *sic*

Drat, I can't stop laughing at this......