Watch: Beyoncé pulls a face after forgetting the lyrics to 'XO'...

She fell head first down a flight of stairs on tour several years ago and displayed her superwoman prowess with a miraculous recovery. So forgetting lyrics is absolutely nothing to Ms Knowles-Carter. Last night, she took her year-long 'Mrs. Carter Show' world tour to Toronto where she continued to promote new single 'XO'. Mark 2:52 shows her accidentally skipping the chorus before recovering. As part of her usual cue, she encourages fans to sing a long but the crowd interaction was rubbish. I've seen more enthusiasm at a graveyard.

Thoughts?