Continuity mistake: After Ken reverses the steamroller after running Otto over with it, you can see a red patch signifying his splattered body in front of the roller. However, a few scenes later, Otto is seen alive. (Otto was originally meant to die, until test audience feedback influenced a change of mind on the part of the filmmakers.)
Otto: Now, apologize.
Archie: Are you totally deranged?
Otto: [long pause.] You pompous, stuck-up, snot-nosed, English, giant twerp scumbag, fuck-face dickhead asshole!
Archie: How very interesting. You're a true vulgarian, aren't you?
Otto: You're the vulgarian, you fuck! Now apologize.