Spanish Fry - S5-E12
Lrr: Mmmm. This jerked chicken is good. I think I'll have Fry's lower horn jerked.
Bender: It's used to it. Woooooooo!
Starring: John DiMaggio, Katey Sagal, Tress MacNeille, Billy West, Lauren Tom
Spanish Fry - S5-E12
Lrr: Mmmm. This jerked chicken is good. I think I'll have Fry's lower horn jerked.
Bender: It's used to it. Woooooooo!

Continuity mistake: When Fry first meets Leela, there's a panel on the wall beside him. It has one red button at the bottom. In subsequent shots it has two buttons. (00:03:50)
I, Roommate - S1-E3
Trivia: Bender's apartment number is 00100100 which, on the ASCII chart, is a Dollar sign. (00:05:35)
Answer: You are thinking about episode 20 of series 2 - "Anthology of Interest I". She technically never kills anyone, but in the episode she ask a "What if machine" (one of the Professor's inventions) what would happen if she was more impulsive. The machine then shows the more impulsive Leela killing off the Professor to get the money from his will and thereafter killing Hermes, Bender, Scruffy, Cubert, Nibler, Amy and Zoidberg to cover it up. Finally she does something really impulsive with Fry.
Andreas[DK]