#GreaseLive trended Sunday night during FOX's live telecast of the classic musical
Credit: Michael Becker/FOX

#GreaseLive is the word.

Grease: Live was must-see TV for many on Sunday night – and viewers had a lot to say about Fox’s telecast of the classic musical.

Headlined by Julianne Hough as Sandy and Aaron Tveit as Danny, the cast of the of Grease: Live braved not only a live studio audience but also the watchful eyes of millions across the country.

And people had a lot to say about the live telecast (and we’re not just talking about their reactions to Tveit in gym shorts):

Though, not everyone was a fan: