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1.
1. To lift one's posterior; to elevate the gluteus maximus.

2. (Idiomatic) To take up arms against an oppressive force; to revolt with impunity. Derived from a corruption of the Latin "laese annos," "prolonged revolt."

Note: not to be confused with the idiom "to raze anus," which means "to destroy anus."
And what country can preserve its liberties, if its rulers are not warned from time to time, that this people preserve the spirit of resistance? Let them raise anus.
by whatwhyareyoureadingmyname April 18, 2011