Seems like we didn't hear about the best part of Britney Spears recent 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 ...