The word rat can be used as an insult or speaking of the animal.People use ‘rat’ as an insult because their comparing them to a rat.
scenario 1
Bully:Ew you look like a rat today.
Person:How? that’s an animal.
Bully:My point
scenario 2
Girl 1:EW ITS A RAT
Girl 2:EW OMG!
Bully:Ew you look like a rat today.
Person:How? that’s an animal.
Bully:My point
scenario 2
Girl 1:EW ITS A RAT
Girl 2:EW OMG!
by oksoimrllyannouedidcboutu April 10, 2020
Get the ratmug. A former alternative teenage male who has grown out of the times, but still thinks they’re edgy style fits who they are. Often associated with addiction issues, studded belts & child support
I ran into Kyle at the bar yesterday, he’s was rambling about “grabbing’ an Axe from the pawn shop & getting the band back together” while he did a hot rail off the urinal. i think he’s going for king of the Bunny Rats.
by Rebel-Sex December 26, 2023
Get the Bunny Ratmug. 
Someone (usually a young white male) who hangs around the an Anglo-Catholic church, volunteering for every liturgical role and relishing being an insider.
I know he can be a pain, Father, but if it wasn't for Bill being a real sacristy rat, we wouldn't have a subdeacon.
by O Pai dos Gatos January 9, 2021
Get the Sacristy Ratmug. 