Well, you want to think twice about that, you know.
5 seconds sound clip from the X Minus 1 - A Gun for Dinosaur by L. Sprague de Camp classic radio drama series.
You can hear this line at 00:06:18 in the radio play.
Quote context
[...]
- Well, most of us are frightened at first but... Ah, it doesn't do to speak of it.
- I'm building a new house. I'm engaged, you know, getting married...
- Well, I'm determined to hang a dinosaur head over my fireplace or die in the attempt.
- Well, you want to think twice about that, you know.
- I know it's ridiculous but I'm determined to do something big for once.
- So we drove Holtzinger into the country to let him try the six-nought-nought.
[...]