Q: Is that a Band-Aid on your scalp?
A: Yes. Yes, it is.
Q: How'd you cut yourself there?
A: I was crawling behind my PC to futz with hardware and I injudiciously sat up too quickly and scraped my head against a metal flange on the PC case.
Q: Hmm. Feel stupid about doing that?
A: Why, yes I do. But not nearly as stupid as I feel wearing a Band-Aid stuck across my (highly visible) scalp. :-)