For me it goes back to my teens. the new neighbor was 2 years older than me, tiny tits, huuuuge (and I learned a few years later extremely responsive) nipples.
Didn't own a bra. but owned many tight white tank tops!!
I'm getting hard just remembering
Love it! A bull told me once if a man dont use your tits hard he dont really care that much about you If you go home with em sore and aching, you know he cares.