It's a pretty monumental day because two of our fave Nickelodeon stars, Jennette McCurdy and Ariana Grande, have birthdays today! But their relationship with the channel that skyrocketed them to fame hasn't always been smooth. In fact, the Sam & Cat co-stars have said some things about their experience that, well, don't speak too kindly about the network.

Click through to see more Nick stars who totally dissed the network, and let us know which one shocked you the most in the comments!

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