An ass that is particulary pointy, rather than rounded like a normal ass.
Hey ho, how 'bout you lose that rat-ass and get some real junk in the trunk!
by Aaron N.W. January 14, 2007
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The inability to care or feel any bit of emotion
Oh, hey look, a flying rat's ass.
I told her last week that I don't give a flying rat's ass
by ACRose15 December 26, 2011
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verb (to): to literally give a fuck about something
mother: Adrian, I want you to save your sinking Titanic. The only way you can do this right now, is guess what, to give a rat's ass about your future.

Adrian (snoring): ,,,zzz...zzz...oh hello mom, what time is it?
by Sexydimma May 24, 2012
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A woman, void of any perceivable moral conduct or code, implying trashiness or tackiness, who misuses and degrades their body without charge to another.
Dan: That girl just offered to snowball with me!

Stacey: She is such a rat-ass hoe!
by pimp&ragassho December 16, 2008
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Used in a sentence to describe someone who doesn't care or give a crap....
When Pickle asked me if i knew Gatteaux boo boo'd on the flo i told him i didn't give a Flying rats ass.
by JOLE BLON April 27, 2008
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A process of deciding whether you care or have an opinion about any thing, policy, concept, idea, etc, by stripping it down to its most basic parts. If you are motivated enough to have a position/opinion on any of its parts, then it can be said you give a rat's ass about the topic.

Basically a way of determining whether you give a rat's ass about a specific issue, topic, etc.
Normally, I could give a rat's ass about the New York Yankees. However, since they drafted former Nebraska Cornhusker Joba Chamberlain; I have an interest in them; and how the Yankees are doing passes my rat's ass quotient.
by Deimreon February 24, 2010
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