Phantom Lip

I had a wisdom tooth removed this afternoon (yes, a tooth, and as my wonderful board game from the 70's purchased for a $1 at Good Will calls it: I had a tooth excavated - seriously? It's not like my mouth is an actual cave!). Anyway, my mouth, or at least one side of it, remains entirely numb. I had my husband pinch my lip as hard as he could earlier (I practically forced him to, he didn't want to cause repercussions such as a fat lip, but I thought it would be fun) just because I couldn't feel it. And now? Now my chin itches. The question is: how to scratch an itchy chin that feels nothing? I suddenly feel bad for amputees (not that I didn't feel bad before, but I now feel a new sort of empathy). Hubby tried to convince me to watch myself scratch it in the mirror, as apparently that's how the amputees solve the problem. I hope it works better for them than it did for me.