Marge babysits for Rod and Todd that goes against Ned's strict parenting, while Bart gets kidnapped by a chimp who turns out to be Mr. Teeny's mom.
- Bait-and-Switch: After Marge gave Tutu a touching speech to convince her to give Bart back, Tutu holds Bart out to her, making it look like she got through to her...only for Tutu to leap over Marge and escape her cage with Bart over her shoulder.
- Cheaters Never Prosper: Homer tries to win by shooting all the leading ducks during the race. It results in his duck both going into a windmill and being abducted real ducks. The one he threw back into the race was a real duck and Flanders won instead.
- Epic Fail: Homer's attempts to rescue Bart from Tutu end with him swallowing a tranquilizer dart and knocking himself out.
- I'm Standing Right Here: While consoling Homer over losing the rubber duck race, Marge admits that Bart's performance at a soccer game was terrible, unaware that he was right behind her.
- Non Sequitur, *Thud*: While going through the mill, Homer keeps saying to himself "Protect the duck!". After getting bonked on the head enough, he mumbles "Produck the tect".
- Overprotective Dad: Because he lost Maude, Ned is paranoid that his sons will get hurt. After Rod chips his tooth during an indoor rock-climbing accident, Ned saws the seesaw, bubble-wraps a tree, and blows up the playhouse.
- Replacement Goldfish: Bart becomes one for Tutu. Because her son, Mr. Teeny, was taken away from her, she took Bart in and treats him like her child.
- Shout-Out: The windmill that Homer and his rubber duck go through has similarities to the titular building from The Old Mill.
- Skewed Priorities: Lisa, anyone would have got what Homer meant by "my son's been apenapped!" You didn't need to correct his grammar while your brother was potentially in danger.