Farnsworth, Zoidberg and others in “The Series Has Landed”

Farnsworth

Now, Fry, before you go into space, you'll need to see our staff doctor. I should warn you, though, he's a little unusual. [whispering] He wears sandals. [The door opens. Dr. Zoidberg, who is indeed wearing sandals, turns his head. Fry shrieks.] Dr. Zoidberg, this is Fry, the new delivery boy. He needs a physical.

Zoidberg

Excellent, excellent. [He bends over and retrieves a medical tool.]

Farnsworth

You'll be fine. [he leaves]

Zoidberg

Now open your mouth and lets have a look at that brain.

Zoidberg

No, no, not that mouth.

Fry

I only have one.

Zoidberg

Really? [he pulls a reference card from his top pocket, then looks at it]

Fry

Uh... is there a human doctor around?

Zoidberg

[angrily] Young lady, I am an expert on humans. Now pick a mouth, open it and say [makes a bizarre gurgling noise]!

Fry

Uh... [clears throat, then very poorly imitates the noise Zoidberg had just made]

Zoidberg

[even more angrily] What?! My mother was a SAINT! GET OUT!!!