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Many consider Grease to be one of the most iconic musicals of all time - it's a staple of holiday season TV.
Like most years, it was shown on British TV on Boxing Day but some viewers reckon it has aged terribly.
For the uninitiated, Grease was released in 1978 and starred Olivia Newton-John and John Travolta. It tells the story of how Danny (Travolta) and Sandy (Newton-John) fell in love in 1958 and returned to Rydell High School to navigate their new romance.
Danny is the pinup bad boy who eventually encourages Sandy to shed her good girl look to keep his interest.
One scene that viewers took issue with was when the legendary 'Summer Nights' song played, which included the line 'Did she put up a fight?' when Danny was talking about trying to seduce Sandy.
But it didn't stop there.
People also highlighted that Rizzo was 'slut-shamed' in the film and even had a song about her having unprotected sex and hooking up with different men.
Danny's friend Putzie hid under the floor in another scene so that he could look up the skirts of female students.
A separate scene that depicted a dance contest was labelled homophobic because radio announcer Vince Fontaine said there couldn't be any same-sex couples dancing together.
The movie was also called out for its 'lack of diversity' for featuring a largely white cast.
One person wrote on Twitter: "I caught the end of Grease, the movie, and noticed there were no black actors or pupils at the high school."
Another added: "Watched Grease on the BBC, surprised they let it go, full of white people."
This isn't the first time the movie has been put under the microscope either. When the #MeToo movement kicked off, many looked at Grease as an example of attitudes that should be left in the past.
When asked how she thought the film had aged, Olivia Newton-John replied: "It's a movie and a fun story and I've never taken it too seriously."
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