A person in a leadership role who abuses their "power" to overwork, underpay, undermine, etc their subordinates in the most unethical way. They usually do not belong in their role as they haven't had any formal training and just ended up their by sucking the dicks/tits of their former superiors. Everyone who works underneath them hates them openly but the piss rat's ego doesn't even recognize this. (see also, narcissist)
Employee 1: "I don't like my boss Rachel. All she does is blame everyone else for her frequent errors."
Employee 2: "Classic Piss Rat Rachel"
Employee 2: "Classic Piss Rat Rachel"
by PlatinumPup February 22, 2023
Get the Piss Ratmug. Nancy was an absolute blub rat at the club last night. I had to put down my manual on extension cords just to take in the madness.
by Mel123456789 August 27, 2025
Get the Blub ratmug. 
by UDfan1234567890 January 18, 2019
Get the winged ratmug. by LAACER November 6, 2021
Get the Ratting Me Outmug. 
Rats will always be in the mirror. Looking back at you, like a dog that hasn't
been fed in days. Now go look in the mirror, because there might be one lurking in there right now. I know I’m one!
been fed in days. Now go look in the mirror, because there might be one lurking in there right now. I know I’m one!
by Nipple licker3000 November 7, 2019
Get the Ratmug.