So the description made it click better for me, I think where the confusion might be is because her entry is so "Eh, I'm here I guess", rolling her eyes and everything, and the music doesn't go into anything with a touch of enlightenment or inspiration. It stays on a happy little jingle and Zelda doesn't give a shit about anything, whereas the old cartoons would feature some campy touching music and the hero would seem to have some legitimate personal investment in sharing. The voice actress is great though, her execution of slight apathy was pretty well done.
Probably some little sendoff too, like she explains it and you display a "The More You Know" type thing, only to THEN reveal the punchline. I don't know if that would be "funnier", but it would have delivered the message better of this being like old cartoons.
The punchline itself is kinda old, playing with "gay" as a general insult versus the definition of homosexuality, so that's turning some people off too. I liked Louis CK's "Quit being a faggot and suck that dick" interpretation of it.
ANYWAY that's my constructive input, which has little to no value. Me personally, I liked it. I feel like your art is improving, and was that you voicing the kids? If it was, not bad on that at all.