'I don't give a rats ass' is a similar phrase to 'I don't give a shit'.This basicaly means that the person who uses these words doesn't care about the circumstance whatsover.Literally,it means the person doesn't care about that situation even to the extent of a rats ass!
Person 1-Hey mate,My girlfriend presented me with a mobile
Person 2-What do you expect me to do? I dont give a rats ass about it!
by Vinks July 23, 2014
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This is one of the most vile and illegal sex moves that can be performed. First you need a very unintelligent girl that trust you and you can have sex with, then you cook her coos coos with saw dust in it so she gets very constipated, then after a week, start having sex with her put two large sewer rats on her back in a cage that is opened on one side to the girls back, then put napalm on the rats, light them on fire forcing them to scratch into the girl. This will cause a vibrating sensation that is very pleasureable for the man.
I can'b believe you want to Flaming Rat Ass splunker (FRAS) her, you could go to jail you know
by courtesySMOSS May 5, 2009
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An expression meaning I couldn't care a less or give a shit about something.
Worker: "I was late to work because my car broke down goddamit!"

Boss: "I couldn't give a rat's ass if you got anally raped this morning! You're fired!"
by Human Pickled Punk May 7, 2016
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Some stupid shit i'd say to myself when the supermarket map was chosen on Natural Disaster Survival.
(specifically i'd say shit like: "would you like to buy some Bullshit and Rat ass?"
by FuckassEmpire October 6, 2023
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