So there's . There's a reason that you're in my head And there's a good reason why you're in my bed 'Cause there's a reason now that you're my girl There's a reason that ... you ... rock . my ... world You rock my world You rock my world 'Cause you're dirty But you got a good heart D-D-D-Dirty But you're not a cheap tart Yeah, you're dirty But you got a good heart D-D-D-Dirty But you're not a cheap tart There's a reason why you're in my head There's a very good reason why you're in my bed Oh, there's a reason now that you're my girl There's a reason why you rock my world 'Cause you're dirty But you got a good heart D-D-D-Dirty But you're not a cheap tart There's a reason why you're in my head There's a good reason why you're in my bed There's a reason now that you're my girl There's a reason why ... you ... rock . my ... world You rock my world You rock my world 'Cause you're dirty But you got a good heart D-D-D-Dirty But you're not a cheap tart Yeah X2