Are You Done?

I have an officemate, known for being funny, cracking jokes now and then. One time, he was doing some configuration with our Manager's computer:

Our Manager: Hey Cris, are you finished?

Cris: No. I'm not Finnish, I'm a Filipino.

Our Manager: No, no, I meant are you done?

Cris: No. I'm not Dan, I'm Cris!

We are all laughing, including our Manager. I think I've read this joke somewhere, but it still made me laugh. He was able to deliver it perfectly in the real world :)