I was on a trans Pacific with CX when dinner was interrupted by a quite attractive young Blond lady running through the cabin with "nothing on but a smile" as the song goes, hotly pursued by a number of Cabin crew. She managed 1 or 2 circuits before being caught. It was more fun than the movie as I re-call. Spoke to one of the cabin crew later who told me it was a pharmaceutical issue of some type, and the poor girl was now in tears back in economy about what she had done. I am quite sure she was not arrested or anything upon arrival, maybe a quiet talking to about tablets and booze perhaps.