sing like a birdie(redirected from sang like a birdy)
sing like a birdie
To inform (against someone) to the police or other authority about their criminal or illicit behavior. I heard Joey Malone has been singing like a birdie in the hopes of getting his sentence reduced. Let's make sure he's sleeping with the fishes before he gets to trial!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.