What is it with everyone and knives lately? Bizarre fading star Britney Spears reportedly hurled a butter knife at a stage manager’s head during a recent lip-synching performance at the House of Blues.

According to the National Enquirer:

The bizarre blowup occurred when a stage manager went to Britney’s dressing room before showtime to tell her that special lights she’d ordered weren’t available. “What? You didn’t get the lights I wanted?” shrieked Britney. Stunned by her fury, the guy stammered that the house lighting looked fantastic but…. SHRIEEEEK!…Britney screamed, snatched a butter knife off a buffet table - and flung it at his head! The guy ducked and the knife slammed harmlessly into the wall.

A fuming House of Blues manager lit into Brit:

“You’re not a big enough star that I can’t cancel you right now!… You apologize immediate or I’ll make sure you never appear at any House of Blues again… or anywhere Else!”

A tearfully Britney demurred and begging her victim’s pardon.