Sentence:  Aah, everybody, get on the floor / Let's dance / Don't fight the feeling / Give yourself a chance / Shake shake shake, shake shake shake / Shake your <WSD>booty</WSD>, shake your <WSD>booty</WSD> / Oh, shake shake shake, shake shake shake / Shake your booty, shake your booty 
Meaning of the word marked with <WSD> tags:  The buttocks.