You fellas been doing a bit of boozing, have you? Sucking back on Grandpa's old cough medicine?
7 seconds sound clip from the Dumb and Dumber movie soundboard.
You can hear this line at 00:28:51.722 in the Blu-ray version of the movie.
Quote context
[...]
- Huh?
- No, it's a cardigan, but thanks for noticing.
- Pull your vehicle to the side of the road!
- License and registration, please.
- You fellas were going a little fast back there, wouldn't you say?
- You fellas been doing a bit of boozing, have you? Sucking back on Grandpa's old cough medicine?
- No. Oh no, sir. No no no. No, huh-uh.
- Come on, give me that booze, you little pumpkin-pie-haircutted freak! Come on!
[...]