Charmed: Brain Drain

"I'm going to be so happy when I vanquish your sorry ass."

- Piper Halliwell

"Brain Drain" is the seventh episode of season four of the supernatural fantasy series Charmed, and the seventy-third episode of the series overall. It was directed by John Behring with a script written by Curtis Kheel. It first aired on the WB Network on Saturday, November 8th, 2001.