For the record we always liked "Dirty" Christina Aguilera and now that she's at total hot MILF status we can only continue to love "WooHoo." The reason she does this stuff so well is because if you have talent you can almost get away with anything. Christina's been reinventing herself since 1999. This dirty version is a little more sexy without the guilt of "getting tested," which makes perfect sense for Nicki M! Never one to let us forget that she was a drama major in high school, Nicki puts on her best trembling-in-ecstasy voice and makes sure we know exactly what a "woohoo" is. Hit the jump for the audio.