look up any word, like dirty sanchez:
the act of not wiping your buttox for a week or more and then plucking a handful of your own butthole hairs and placing them into an oven baked treat that is given to someone who irritates you.
"Scott doesn't know that I added my secret ingredient the rusty herb to his birthday cake, he thinks I'm doing him a favor."
by cuddycowboy36 April 11, 2010