Vega would always try and nip me in the butt when i pick out her front hooves. I'd put one of my feet up so she'll turn her head into that, or i'd put out the hoof pick (not the metal end) to her nose, so she'll run into that. I'm at the point now that, all i have to do is say "ehhh!" and she'll stop right away.
I was thinking about working around that, but i figured that the horse would either a. have to learn that's unacceptable, or b. that the horse would try and make it more of a game.. (let's see how far away i can get her to stand and still be able to pick up my feet)
I do hope you're ok though!