You know what it is? He's killing bugs with Kung Fu.

5 seconds sound clip from the Disciple of Shaolin Master movie soundboard.

You can hear this line at 00:38:41 in the DVD version of the movie.

Quote context

[...]

- Oh it's itchy, oh I'm itchy!

- So, I've got you you damn little bedbug. So you'd have a go at me, would ya? That'll fix ya.

- Oh, there's another one. Oh that's even worse. Oh this is, I can't stop it. Oh, it's gonna kill me. Oh, it's so itchy. Where is it now?

- Uncle? Uncle? Uncle, it's already late,

- What's with the beggar? What's he up to now?

- You know what it is? He's killing bugs with Kung Fu.

- Oh, I'm so itchy!

- Hey, what's the big joke? Don't you know how late it is? You two should be asleep.

- That's bad, where is he?

- My god? Has he gone to Chin Lian mountain alone?

[...]