lagger
A lagger is someone who rats out their cellmate to the cops just so they can get a shorter sentence or some cash. They’re the worst kind of low-life.
@ghostiintom just told the cops about me for a five-year reduction. I’m gonna kill him when I get out.
This lagger snitched on me for a $500 bribe. I’m gonna make him regret it.
The lagger in our cell got 2 years off his sentence. I got 5 more. That’s not fair.