I have to say, though, for some reason the word "armpit" is a turnoff for me. It sounds somehow unsexy. I'll say "underarm" if someone else says "armpit" without always realizing that I make the substitution. "Underarm" is a downright sexy word for me (because the area is sexy)! Ironically, I'll use "ass" or "pussy" or even "tits" and it seems sexier than "butt," "vulva," "privates," "breasts," or "boobs." Not in mixed company, of course.
And they say men don't care about words!
Last for now, and as always sorry for reposts. Enjoy,
Rick