Bender: You're looking less nuts, crabby.
Zoidberg: I'm feeling less nuts, thank you, because tomorrow I will be depositing my jelly in the cloacal vents of a female. If you catch my drift.

Farnsworth: We, by which I mean you, will have to rush him to his ancient homeworld, which will shortly erupt in an orgy of invertebrate sex.
Fry: Oh, baby. I'm there!
Leela: Fry, do you even understand the word invertebrate?
Fry: Nope, but that's not the word I'm interested in. No need to pack pants, people. Let's roll!

Fry: I didn't come here to see any activity involving two guys. Where do you people do your erotic display?
Zoidberg: Same place as your species: The beach.

Edna: You know, Zoidberg, it's crazy but when you talk this way your obvious deficiencies as a male seem... less obvious. Your genes seem less detrimental. You even stink more.
Zoidberg: Do I ask her to mate now?
Fry: Third date!

Zoidberg: Fry, it's been years since medical school so remind me. Disembowelling in your species: Fatal or non-fatal?
Fry: Fatal.
Zoidberg: Large bet on myself in round one!

Edna: Oh, it's true, Zoidberg. We can't hide it any longer. Fry and I have fallen in love and we're going to mate tomorrow.
Fry: What?!

My fellow fish monsters, far be it for me to question your stupid civilization or its dumb customs, but is squeezing each other's brains out with a giant nutcracker really going to solve anything?

Fry

Fry: Now ask her how her day was.
Zoidberg: Why would I wanna know?
Fry: You wouldn't. Ask anyway.
Zoidberg: How was your day?
Edna: Well first I got up and had a piece of toast. Then I brushed my teeth. Then I went to the store to buy some fish. Then...
Zoidberg: Fry, look what you did, she won't shut up.
Fry: That's normal. Just nod your head and say "Uh-huh".

Edna: Yes, well... excuse me, I've got to powder my mouth flaps.
Leela: Uh, me too.

Zoidberg: Craw!
Decapodian Woman #1: Keep your jelly away from my eggs!
Zoidberg: Craw?
Decapodian Woman #2: So not interested.
Zoidberg: Craw!
Decapodian Woman #3: Humph. I've heard that line before!

Hmm, this "love" intrigues me. Teach me to fake it.

Zoidberg

Decapodian Emperor: The law is clear. Fry and Zoidberg shall fight to the death for the claw of the beautiful Edna.
Fry: But I don't want her!
Decapodian Emperor: Once invoked, the sacred tradition of Claw-Plach can not be taken back. It is a recent tradition, only 18 years old, but it is a tradition none the less.