Great Work Prank - Backfired, of course

I would like to go on record as saying that I totally pulled a fun fast one on my boss. She is constantly concerned about the texture of our cookies, and so I sent her a fake letter and fake invoice from a real recruiter, saying that he'd broken his tooth on a cookie. She not only called him, but it was in an envelope on its way to Legal Council! Shew, thankfully I stopped that from happening. She never laughed; only told me that it would go in my permanent file and I would hear about it on my review.

Sigh.

1. It helps to choose a subject who has a chance at showing a sense of humor.
2. My intention was to create a team environment that rallied around something harmless and fun.
3. My professioinalism is in question.
4. I have been downgraded in her mind.
5. Bummer.
6. I am pleased with the joke and willing to take the heat.