Ever wished you were part of the cast of “Grease”?

Well, now you can be — or at least feel like it.

Stars John Travolta and Olivia Newton-John gave a dance lesson to Variety‘s Marc Malkin on the red carpet for a screening honoring the 40th anniversary of the hit musical.

Travolta kept the dance lesson simple — just a “four corners” from “You’re the One That I Want.”

The pair also reminisced about the first days of filming. Travolta said the amount of rehearsals they had to do was “like going to school.”

“We rehearsed so much in the three week period to get it right,” Travolta said, “and you can see from the energy on that film, we were so anxious to get it right that I think everything — it was like going to school. Every day there was a regimen: song, dance, recording, rehearsing scenes, rewriting scenes. It was a big myriad of events.”

Newton-John remembered that instead of a read-through, the cast had a sock hop.

“Instead of sitting down and reading the script,” Newton-John said, “[producer] Allan Carr arranged for us to have a dance. We all got to meet each other and dance to ’50s music.”

Frenchie actress Didi Conn revealed that the 40th anniversary edition of the film includes a bonus alternate ending, which featured Travolta and Newton-John’s characters kissing in the car as it flew off into the sunset rather than looking back and waving at the crowd below.

According to Conn, however, the above shot of all the students on the field was so expensive to capture that it had to be used in the film.

Newton-John said she didn’t remember the alternate ending and Travolta said he didn’t think he’d ever seen the footage.

But did he remember the kiss?

“Well, that’s another story. Yes, of course!” he said.