Now that would perk up a somnolence-inducing powerpoint presentation!
Did she realize? If so, why on earth would she continue presenting and pretending nothing was going on? If it happened to me, I'd be saying 'just one second' to the audience and shutting everything down STAT. Then I'd carry on without benefit of powerpoint, I suppose, or repair with the audience to the nearest bar to discuss computer hijackings and patent filing.
