My interest here is in the origin of some of the more remarkable fillers, in particular Some of us don't give a rat's ass about schools, you know. [verb] North American spelling standard spelling of [i]give a rat's arse[/i]. Show declension of Example sentences with "give a rat's ass", translation memory. OpenSubtitlesv3 I don' t give a rats ass what you do. OpenSubtitlesv3. Rat's ass. Posted by Shawn on February 20, at Where did the prase "I don't give a rat's ass" come from? The origin of " I don't give a rats ass" came from Pine City Mn. I used to say it all the time, a friend said his uncle liked the saying and started marketing products.