Well, I don't want to do build a ray. But I don't see why people care. It barley happens anymore but kids shows used to have some very sexy women. I got hard when watching Totally Spies sometimes. Don't get me wrong, I see what you're saying but I just don't see why there is such a fuzz about if a kid gets hard when seeing a female butt in a humorous way.
Like I said, the scenario sets the thing up. Is it comedic or sexual (or both)? If it's not there to titillate but someone gets titillated by it, I don't see the problem as people can be titillated by pretty much anything. Especially in this day in age where porn of all kinds are just a google search away on a tablet or smart phone (something every kid has) I don't see why people are so sensitive to kids being shown the mildest form of male AND female nudity in a comedic fashion. I'm not saying "show the kids big, floppy tits and shove asses down their throats".
To me it sounds more like parents who want to shelter their kids because they're afraid the whole "birds and the bees" discussion is gonna crop up.