Random Cool Details About 'Grease' That Rule The School (17 items)

(#15) Kenickie Was Supposed To Sing 'Greased Lightning'

From Songfacts:

Jim Jacobs and Warren Casey wrote "Greased Lightning" for Kenickie and the T-Birds to sing while they dream of fixing up his rundown car, but Danny (John Travolta) took the lead in the 1978 film at Travolta's request.

The single was a much bigger hit in the UK, where it peaked at #11.
(#10) Vi Misses Her Mark

Posted by u/jadenz98:

In Grease (1978), when Frenchie is talking to Vi right before "Beauty School Dropout," Vi misses the light switch, but the lights still turn off.

Watch the clip here.
(#9) Danny Has A Few Missteps In 'We Go Together'

Posted by u/rhcpjess:

In Grease for the song at the end of the movie "We Go Together," you can see John Travolta mess up the words twice in the beginning of the song. First one is at 0:24 and second mess up is at 0:40.

Watch it here: 0:24 and 0:40 are the mess ups

Posted by u/pluck-the-bunny:

Sandy actually laughed at the second one.
(#11) Most Of The Actors Were Just A Tad Older Than Their Teen Counterparts

Olivia Newton-John was 28 when she cast to play teen dream Sandy in Grease, while John Travolta was 23 and Jeff Conaway was 26. Most of the cast were in their 20s except for Stockard Channing, who was 33. Dinah Manoff was the only main cast member who was actually of high school age.
(#1) Frenchy Wasn't Acting When It Came To Her Teen Angel

According to Didi Conn (Frenchy), she didn't know Frankie Avalon was going to be in the number until the day of shooting "Beauty School Dropout." She had a crush on him for many years, so her shock and awe was very real.

In an interview with Female First, Conn stated:

That was exciting because we rehearsed for the movie for about three weeks prior to filming and Frankie Avalon wasn't there. So I did the scene until the morning we were actually going to shoot. It was really great because they shot my reaction first. I hadn't seen him before and he was so handsome, really beautiful, sexy, and delicious. All I had to do was look at him. I look so weird, shall we say, with that pink hair. I just let myself just take it all in. I enjoyed myself and I actually get a giggle when I watch that scene because I was literally drooling and I wasn't acting either.
(#2) A Family Affair

Posted by u/Numerous-Lemon:

In Grease (1978), one of the waitresses is played by Ellen Travolta, the sister of actor John Travolta. She’s the one who says “Oh, there's Danny and Sandy."