It doesn't rival "The Hangover," but shock rocker Marilyn Manson admitted to going a little "nuts" in Las Vegas recently.

After a night of partying at a Halloween bash, the 42-year-old was ready to hit a karaoke bar at 4 a.m, but none of them were open, the New York Post reported.

So Manson, friends and girlfriend, model Linday Usich, headed to the bar Born and Raised, where Manson was spotted throwing back shots, shotgunning beers and belting out Justin Timberlake's "Cry Me a River" -- six times.

When he left the bar, Manson got mad that there was no car waiting for him, and took matters into his own hands.

According to the Post, the rocker jumped into the driver's seat of a limo while the driver was making a phone call.

The driver yanked Manson from the car, and Manson is said to have playfully waved a knife at his friends until his own car arrived.

The Post reported that before he took off, he yelled, "I am sorry I went nuts, but I'm a rock star!"