The pineapple in the title refers to a hand grenade, as they look somewhat like a small pineapple.
Mundt: (to Dahlgren, concerning the killing of Ness) Follow him, find him, lose him.
Mundt: (to Dahlgren) Eliot Ness is not just another job.
Mundt: (to Dahlgren) For ten grand you better pitch a shutout.
Fuse Man: You guys roust me like a common hoodlum.
Hobson: There's nothing common about you.
Ness: Anyone tells you he can look down the barrel of a gun and not be afraid is a liar.
Dr. Samuels: Or a lunatic.
Dr. Samuels: People do get along without their sight.
Ness: Not Federal officers.
Gross: Did Ness die?
Mundt: Better. He's blind. Stone blind.
Mundt: (about Dahlgren) That one, if I met him in a dark alley, I'd worry.
Narrator: Al Gross, killer par excellence in his own right, found Elroy Dahlgren. He never found anybody again.
Dahlgren: Hey, Ness, you run pretty good for a blind man.
Dahlgren: (after Ness has overpowered him) I never been scared of anything in my life. Honest!
Ness: The man who says he's never been afraid is either a lunatic or a liar....I don't think you're a liar.