- But why are all these monks so good at Kung Fu?
- Probably because their heads are shaven.

7 seconds sound clip from the Shaolin Temple Strikes Back (1981) movie soundboard.

You can hear this line at 00:17:57.087 in the DVD version of the movie.

Quote context

[...]

(Speaking Mandarin) This is the monastery. The monks will come here to pray.

- This is the pagoda park.

- What are the pagodas for?

- They're the final resting places for all the abbots of the monastery.

- Oh.

(Shaolin monks exercising)

- Are all these Shaolin monks really good at Kung Fu?

- Well, people say that Shaolin Kung Fu is number one.

- But why are all these monks so good at Kung Fu?

- Probably because their heads are shaven.

- Hm, right. Then shave your head too. Huh? What? Shave my head?

- I want you to be very helpful. Do it at once.

- But I was only...

- Will you shave or not?

- Yes, Your Highness.

- Good. Get up now.

- Ha ha ha...! Looks good, looks good!

- Go to hell!

[...]