* SugarWiki/AwesomeMusic: "[[http://youtu.be/SXaCwqY0PmE?t=11m50s That's Us]]", from "Haunted Society Plumbers", with some SugarWiki/FunnyMoments thrown in for good measure.
* 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
* DudeNotFunny: Most of the Fluffy and Uranus abuse was pretty funny, but the one from "All About Elliott" was just disgusting. Duckman ''eats'' Fluffy and Uranus and a couple days later, we see Fluffy and Uranus back in the office, shivering in terror and looking disheveled. Duckman actually ''digested and crapped them out''. Yuck.
* EarWorm: The ThemeSong[[http://www.youtube.com/watch?v=s9BZzTEffiA]], as they often are.
** "We're Off on the Road to Dendron".
* 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 ComedyCentral the day after Strom Thurman died. Possibly done so deliberately.
** Before he died, Jim Varney voiced Walt Evergreen, president of a tobacco company.[[spoiler: In case you're curious, Varney died of]] ''[[spoiler: lung cancer]]''.
* 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.
** The ending song to "America, The Beautiful" can be this or NarmCharm, depending on the viewer.
* TheyJustDidntCare: In some scenes of episodes during the fourth season, Charles and Mambo's heads somehow switch places. Usually, Charles's head is on the left while Mambo's is on the right. But then, you'll occasionally hear Dana Hill's (or Pat Musick's) voice coming out of the right head. How did they screw that up when they never had trouble keeping this straight in the first three seasons?
** To see if the audience was paying attention?
** In "Days of Whining and Neurosis", Grandma-ma clearly wheels herself around in one brief scene. I thought she was comatose?
** In "Westward, No!" Duckman visits a relative's catfish ranch in Louisiana, which is depicted as an arid, rocky desert. It would be a simple RuleOfFunny gag, except no one ever even [[LampshadeHanging lampshades]] how utterly wrong that is. It seems like the writers really thought there are deserts in Louisiana.