We had a Halloween/Birthday party at our house last weekend. I went as Tobias from Arrested Development, complete with tiny cut offs (there are dozens of us!). I even shaved my hair into a horseshoe haircut.
I actually performed with my band in that attire (sadly there are pictures of this somewhere out there).
After playing, I disappeared into my room and changed and slipped into the broom closet, unnoticed, where I had stashed the mask.
My drummer went to find someone and ask them to fetch something from the closet, at which point I drunkenly popped out and proceeded to stamp around the backyard.