Later, at home and at dinner, I chomped hard for the second time this week on the right inside of my cheek, and was so glad (as glad as you can be when you hurt yourself like that) that I was in the dining room by myself at the moment. It's awkward, being near someone who's just chomped their cheek like that. I winced and flailed, but was seen only by the cats, not by either of the paying housemates (one who was out, one who was in another room). And I stayed quiet, though I wanted to yell or bark or something loud. But, again, that would've worried someone, and I didn't want to cause that.
I think/hope my sense of humor's been returning. Soon after, I flossed, noticed a red chunk of something had come out of my mouth, and thought "I hope that's tomato skin, not me-skin."