You'd better not be foolin'.
2 seconds sound clip from the Dumb and Dumber movie soundboard.
You can hear this line at 00:18:46.207 in the Blu-ray version of the movie.
Quote context
[...]
- I don't know about you, but I am getting sick and tired of-of running from creditors!
- You know what I'm sick and tired of? I'm sick and tired of having to eke my way through life.
- I'm sick and tired of being a nobody. But most of all... I'm sick and tired of having nobody.
- You'd better not be foolin'.
- Okay okay, just let it out. Have a good cry. Come on. Okay. Okay, that's enough.
- It feels like you're running at an incredible rate, Harry.
- Would you quit it? We're not even through Connecticut yet, and already you're annoying me.
- Sorry.
- Jeez.
[...]