Playing Rebecca Black on repeat is enough to make you insane.
Still, some people take their animosity for the teen "singer" too far. Anaheim police are investigating two death threats made last month against Black.
The 13-year-old YouTube sensation whose "Friday" got her a legit manager and face time on many talk shows, apparently has enemies as well as fans.
"In essence, the threats were related to getting the music off the Internet or they were going to kill her," police spokesman Sgt. Rick Martinez said.
"We can't validate how serious they are, but we do take it seriously."
One Rebecca Black death threat was phoned in and another emailed, Martinez said, adding, "In the meantime, we are keeping an eye out for her."
"We are working together with the Anaheim Police Department to ensure Rebecca's safety at all times," added the teen's rep. Yes, she has a rep.