If you’re anything like us, you’ve seen Grease at least a dozen times. You know all the songs, you fell in love with/wanted to be Danny or Sandy at some point in your life and are just itching to sing along with Grease Live. Which you will ace, of course, note for note. But, we’re willing to bet a T-bird that there are a few things about the film you haven’t noticed:

1. Grease is supposed to take place in the 1950s, but opens with “Grease is the Word” by the BeeGees and is very 1970s disco.

2. Sandy is compared to Cinderella in the opening credits – notice the birds helping her get dressed!

3. The school where Grease is filmed is the same one from Britney Spears’s “…Baby One More Time” video.

4. While everyone is singing “Summer Nights,” Jan uses her fork to twirl up Patty Simcox’s ponytail. Clearly there was no zero-tolerance policy against bullying at Rydell High.

5. Lorenzo Lamas is in this movie as the totally square football player who hits on Sandy (but ends up with Patty). If only he knew that he’d one day grow up to be Renegade.

6. It’s never explained why Sandy didn’t move back to Australia. A “change of plans” is the only reason given. Well, OK, then.

7. Frenchie has an unfinished paint-by-numbers horse picture hanging above her bed.
8. Why does Frenchie have so many blonde wigs in her room?

9. Marty and Rizzo have matching belts (which look amazing on them).
10. At the school dance, the band seems to have more back-up dancers than actual musicians. (Hey, sometimes you need some hype men.)
11. “I caught Vince Fontaine trying to put aspirin in my Coke at the dance.” Wow, date rape jokes!
12. The movie ends with the end-of-school-year carnival – but if you think about it, there have only been, like, four days of class.

13. Attractions at the carnival include a two-headed chicken and an eight-legged pig. A butcher’s dream!
14. Danny and Sandy go off in their flying car while listening to… Alvin and the Chipmunks. Really. Watch the scene if you don’t believe us:

Ah, young love.

Watch Grease Live! on Sunday, Jan. 31 on CTV, and then exclusively on CraveTV starting Feb. 19.