You can show your ability.
4 seconds sound clip from the Ninja Swords of Death movie soundboard.
You can hear this line at 00:39:57 in the DVD version of the movie.
Quote context
[...]
- I can try my best to advise him to accept, but whoever will win, you must not injure.
- And before that, I have to know your kung fu, all right?
- You can go and do it yourself.
- We are just two good old friends.
- I drink this cup of wine to you.
[...]