Spock: A most curious creature Captain. Its trilling seems to have a tranquilizing effect on the Human nervous system. Fortunatly, of course, i am.... immune... to its... effect...











McCoy:Almost 50% of its metabolism is geared towards reproduction. Do you know what you get when you feed a Tribble too much?
Kirk: .....A fat tribble.
McCoy: No. You get a whole bunch of hungry little tribbles.




McCoy: Well, the nearest thing i can figure out is that they're born pregnant, which seems to be quite a timesaver.
Kirk: I know, but really....
McCoy: And from my observations, it seems they're bisexual, reproducing at will. And brother, have they got a lot of will.






The Ending
(which i think is the funniest part)

Kirk: I don't see any Tribbles around here.
McCoy: And you won't find a Tribble on this entire ship.
Kirk: Bones! How did you do that?
McCoy: Well, i can't take credit for another mans work. Scotty did it.
Kirk: Scotty! Where are the Tribbles?
Scott: Oh, uh.... Captain, it was really Mr. Spocks recomendation....
Kirk: Of course. Spock.
Spock: Based on computer analysis, of course, and taking into account the possibilities of...
Kirk: Gentlemen. I hate to interrupt this... mutual admiration society, but i'd like to know where the Tribbles are.
McCoy: Tell him Mr. Spock.
Spock: Well, it was Mr. Scott who performed the actual engineering.
Kirk: Mr. Scott. Where. Are. The Tribbles?
Scott: I used the transporter Captain.
Kirk: You used the transporter?
Scott: Aye.
Kirk: Well, where did you transport them?
(silence)
Kirk: Scotty, you didn't transport them into space did you?
Scott: Captain Kirk! That's be inhuman!
Kirk: Well where are they?
Scott: I gave them a verra good home sir.
Kirk: WHERE?!
Scott: I gave them to the Klingons.
Kirk: You gave them to the Klingons?
Scott: Aye sir. Before they went into warp i transported the whole kit'n'kaboodle into thier engine room, where they'll be no tribble atall.
(general laughter)


^My favorite scene, sorry. hadda share.^