If you want to drown yourself, use water. This won't do it. I know. I tried it once myself.

8 seconds sound clip from the The Fortune Cookie (1966) movie soundboard.

You can hear this line at 01:29:16 in the Blu-ray version of the movie.

Quote context

[...]

- Okay, Harry, it's your neck. But if you're going to do something foolish, just remember to show your good profile, because you are on Candid Camera!

- Oh, children! Watch it!

- Harry, are you all right?

- I'm fine.

- I'll have one more of these.

- Sorry.

- What do you mean, sorry?

- The management reserves the right to refuse service to anyone.

- I own this joint.

- But you appointed me the manager, and I say no.

- Cut that out, Pop. I need it.

- If you want to drown yourself, use water. This won't do it. I know. I tried it once myself.

- What's that?

- Bourbon.

- Haven't seen you around in a long time. It's me, Elvira. I bleached my hair. Do you like it?

- It's gorgeous.

- Well, you know what they say, Blondes have more fun.

- Yeah, because there's always some sucker to pay for it.

- Beat it.

- What did I do?

- I said, beat it!

[...]