Did The flintstones Wear Underwear?

My oldest boy asked me the other day, "Daddy, did the Flintstones wear underwear?" That didn't bother me. what bothered me was, I had to think about it. I had to think long and hard. I ended up saying, "Yes, of course they did." but actually they didn't. Underwear hadn't been invented yet. Unless it was underwear made of stone and by definition that is horribly uncomfortable. But I said yes because I didn't want him going to school the next day, dropping his pants in front of everyone and going, "Look, I'm not wearing any underwear - just like the Flintstones.

I told my two boys I would never lie to them, but in times like these, little white lies are okay, I have learned.