Christina Aguilera - The Things They Say 21183
"I'm the momma bear trying to reign in my rowdy boys... It's like having three brothers. I'm a teacher with the little boys in the classroom. I have to do some wrist slaps every now and then to get them in line." Singer Christina Aguilera describes the dynamic between her co-stars Cee Lo Green, Adam Levine and Blake Shelton on new U.S. reality TV show The Voice.