In no particular order:
1. The Thundermans. Reason: Theme song is catchy AF and haunts me in my dreams
2. Family Guy. Reason: Every time someone cracks a masturbation joke, my oldest three kids laugh. Loudly. Then, my fourth or fifth child asks me to explain the joke, and what should easily be a teachable moment turns the joke not funny
Speaking of masturbation jokes...
3. Women's water polo or swimming--Pretty much any aquatic sport that women are playing these days. Reason: Atomic wedgies turn all of these respectable female athletes into unwitting strippers.
You may be asking yourself what I expect my kids to do in the event that they are sitting behind the starting blocks as official meet timers. In that case, they should close their eyes and listen for the splash.
4. That Discovery Channel Dolphins DVD. Reason: Contains live footage of a dolphin gang bang mating strategy. Babysitter who first viewed it with them was unsure of what to say.
[An actual book cover I found during my internet quest to remember the name of that Discovery Channel Dolphins DVD. Some things just aren't meant to be Googled, such as "dolphin sex". Also, for the record--gay dolphin sex is fine; I draw the line at hurting others, crimes against humanity, or group sex, though.]