This is a fantastic one to try on people, although only spoken. In text it loses what makes it great.
Me: How High is a Chinaman.
Other: I don't know, how high?
Me: No no, How High is a Chinaman.
Other: I have no idea, how high?
Me: Yes. How High.
Other: ... I don't know, do you?
Me: Are you listening? How High is a goddamned Chinaman!
Other: I don't fucking know!
Me: For fuck's sake. How High is a Chinaman.
Other: Yeah? Well screw you, buddy. *leaves*
I have only ever used this once, and it did provoke a cacophony of laughter at the time.
Doctor: *walks into the room* Have you seen my nurse?
Me: Yes, she's outstanding in her field.
Oh yeah. I'm king of the funnies.
Me: How High is a Chinaman.
Other: I don't know, how high?
Me: No no, How High is a Chinaman.
Other: I have no idea, how high?
Me: Yes. How High.
Other: ... I don't know, do you?
Me: Are you listening? How High is a goddamned Chinaman!
Other: I don't fucking know!
Me: For fuck's sake. How High is a Chinaman.
Other: Yeah? Well screw you, buddy. *leaves*
I have only ever used this once, and it did provoke a cacophony of laughter at the time.
Doctor: *walks into the room* Have you seen my nurse?
Me: Yes, she's outstanding in her field.
Oh yeah. I'm king of the funnies.