I don't give a rats.

I don't care.

As in "I don't give a rats ass." Clever because, ass is implied.
Hey Brian, Jonas Brothers tickets go on sale tomorrow!

Brian: "I don't give a rats."
by gwoodsy February 25, 2009
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I don't give a rats fuck

Not giving a fuck, especially that of rats. Not the even lowest fucks were given. You really do not give a fuck.
Did you hear about their break up??
No I don't give a rats fuck.
by Ratman6969 February 28, 2013
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