How do you like that? After all these years, it finally worked.

3 seconds sound clip from The Ant and the Aardvark (1969) - Don't Hustle an Ant with Muscle (S1E15).

You can hear this line at 00:01:36.939 in the Blu-ray version of the episode.

Quote context

[...]

- Hey, there's something I could sure use. Vitamins for strength. Directions: Take one each day for health and vitality. I wonder if they work for us little ants. Can't hurt to try.

- If one a day will do as good as it says, ten of them should do ten times as good.

- You know what they say, Everything comes to him who waits. So who am I to argue? I'll wait.

- Hey, Ant, I know you're still in there. Better give up and save us both a lot of trouble.

- I know that direct approach never works, but it doesn't hurt to try.

- How do you like that? After all these years, it finally worked.

- Oh, boy, these vitamins are great. I feel like a million...

- You're stretching things too far, Ant.

- Now maybe you'll show us ants a little more respect.

- You make me so mad, I'll give you such a chop. That hurts.

[...]