I’m always pretty open to letting most men taste my armpits. Since I almost never wear deodorant it’s safe to lick them anywhere I raise my arms. I get picky about who if I also plan to dump some sperm into their open underwear while they lick. Not everyone gets my sperm.
I used to help an former roommate when he’d be jerking off to porn by smearing my fingers in my armpit musk and then wipe it across his nose. Freaked him out at first but later he’d ask me to “give me some”.