Lahey juul
Another word for a breathalyzer, which is a device used to monitor one's blood alcohol content (BAC). Dubbed 'the Lahey juul' because in the television series "Trailer Park Boys," Jim Lahey (park supervisor) frequently uses a breathalyzer in a similar fashion to a nicotine addict.
Yo I got pulled over by this cop who was super chill. He even let me hit his Lahey juul.