Why do female fans get so excited seeing Lady Gaga mutilating Barbie dolls on stage?

During her MonsterBall tour, Barbie dolls were thrown on stage. female fans screamed with elation when seeing her picking them up and putting barbie dolls head first into her mouth to be gnawed upon and decapitated by her clinched teeth. Their excitement seemed at afever pitch. She threw the headles ones into the audience before rubbing her crotch with their heads. They were then also thrown next. There was disappointment in a California concert when she did not decapitate a barbie as everyone expected. She took it by the legs and rubbed it in her crotch and pitched it back onto the stage. Nobody was offended by her mutilation of barbie. It seems amazing that females are offended by non performers who would do the same thing. One is viewed as entertainment. The other is viewed quite differently. Pink had a video with a Barbie with pins sticking in its head. She's sang I'm coming out after looking down upon it. . Nobody was offended by it. Did her female fans have similar emotions as the ones viewing Lady Gaga';s live concert? Actions speak much louder than words. The message we take from these actions are determined by the audience.