* BigLippedAlligatorMoment: Occasionally, such as Gecko briefly gaining the ability to speak and smoke a pipe in "The Amazing Colossal Duckman".
* CrossesTheLineTwice: Too many instances to count. As with ''WesternAnimation/FamilyGuy'' (a show that might be considered its spiritual successor), curious viewers watching their first episode of ''Duckman'' should keep two tallies - one for the number of times you laugh, and one for the number of times you feel insulted and/or begin to vomit. If the first tally is larger than the second, you're a fan.
* CultClassic
* EarWorm: The [[http://www.youtube.com/watch?v=s9BZzTEffiA theme song]], as they often are.
** "We're Off on the Road to Dendron".
* FoeYay: PlayedForLaughs on occasion with Duckman and King Chicken's antagonism. Particularly, there's their interaction while drunk and making amends in "Cock Tales for Four", which is lampshaded.
-->'''King Chicken''': You know this means, don't you?
-->''Duckman gives King Chicken an uneasy expression.''
-->'''King Chicken''': [[MistakenForGay No, not that]]. It means...we're friends.
* FunnyAneurysmMoment: Lampshaded in "Bev Takes a Holiday". Charles and Mambo ask Bernice how she plans to have enough energy to be a mom ''and'' a Congresswoman. Bernice replies that she'll take power naps in the bathroom like Strom Thurmond. Immediately, a disclaimer appears on the screen, stating to disregard the joke if Strom Thurmond has died around the time of the episode's premiere (or rerun).
** Doubly funny as this episode was rerun on Creator/ComedyCentral the day after Strom Thurman died. Possibly done so deliberately.
** Before he died, Jim Varney voiced Walt Evergreen, president of a tobacco company. Varney died of lung cancer in 2000.
* HilariousInHindsight: In "Cellar Beware", Duckman mumbles in his sleep, "Sssh, Hillary, not so loud. What if Bill hears you?" Considering the Lewinsky scandal three years later, I don't think it's ''Hillary'' we have to worry about having an affair...
** "Sperms of Endearment" features a gag about Cornfed being contractually guaranteed [[MandatoryLine at least 10 seconds of screen-time per episode]]. When the show finally ended, Cornfed was the only character besides Duckman to appear in every episode.
** "Das Sub" features a ShoutOut to Comedy Central's ''WesternAnimation/DrKatzProfessionalTherapist'', with Duckman saying, "They look at you and see what they wanna watch. They look at me and know it's the wrong channel." After ''Duckman'' ended, though, reruns turned up on Comedy Central.
* JerkassWoobie: Duckman's behavior and antisocial attitude stems from the fact he still misses his wife, and that ''she'' was the only person who could keep him in line.
* SuspiciouslySimilarSong:
** "Joking the Chicken" featured a take-off of "Music/AlsoSprachZarathustra" which played, appropriately enough, during a ''2001: A Space Odyssey'' parody.
** "The Gripes of Wrath" has a musical parody of the song "Holiday for Strings", aka the theme to "The Red Skeleton Show".
** During a couple episodes of season 4, Bernice was accompanied by a brief {{Leitmotif}} which sounded very similar to the Wicked Witch of the West's theme from ''Film/TheWizardOfOz''.
** And the ''Series/{{Friends}}'' theme was parodied in "With Friends Like These".
* TastesLikeDiabetes: Fluffy and Uranus are deliberately this as to annoy Duckman. Also counts as the In-Universe versions of TheScrappy.
** The ending song to "America, The Beautiful" can be this or NarmCharm, depending on the viewer.
* WhatAnIdiot: Invoked in "A Civil War" when Duckman declares that Val couldn't have killed her husband. Besides other evidence littering the office, he inadvertently presses the play button on a tape recorder on her desk. The tape plays: "Val, put down that gun! You're my wife, don't shoot!" Duckman grabs the tape recorder and smashes it: "I can't hear myself think!"
--> '''Cornfed:''' Duckman, you're overlooking evidence that '''no''' detective, [[TakeThat not even you,]] should be able to miss.