For those of you who've never heard these theme songs, here are the links:

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It's so cheesy.

Hate the show. Hate the song. I also hate Austin and Ally but the song is fine, but I have a feeling it's going to win because of the hate the show gets.

^Asstin & Dully deserves every second of hate it gets, including its godawful songs. I do have to admit, however, that its theme song isn't the worst song on this list.
Wander Over Yonder was... tolerable the first time I watched it, but it got progressively more annoying (though to be fair, I've only ever watched the first episode and half of another one before I flipped the channel).

^ I agree it does deserve the hate, but I feel like the only reason people choose the theme song is because they don't like the show.