Ramjet, Puzzler and others in “Unfinished Business”

[to Batman and Robin, who are in Puzzler's hot-air balloon trap] Hey, you guys want some gum?

Really, Ramjet!

That's what they give you in the airlines before you take off.

Batman

No, thank you.

Robin

Litter bug.

Now, for the launching, give me the dagger. This is the unkindest cut of all. Farewell, Dynamic Duo. Bon voyage, happy landings. Adieu, adieu, remember me.