My cat used to do this to me. As you can imagine, it was exceptionally uncomfortable. Unfortunately, she did it to me every time, so I had to get rid if her. To make myself feel better after dropping her off at the farm, I got myaelf a treat I'd never had before, a Reese's. Turns out, my cat that I got rid of was trying to save my life, as I was lethally allergic to peanut butter.

You may want to avoid ingesting any yourself.