Naked full-body hugs with nudists.
Mostly, when nudists hug, they use the "tripod method" (leaning in with just the shoulder touching). But every once in a while - if someone trusts, appreciates you or is a good friend - they might go in for a "full body hug."
When it's happened to me, the feeling of a woman's nipples brushing against my chest, or my cock brushing against their thigh, is always a "surprise." It's always innocent (except in one case where the woman was clearly trying to make an "impression") so I don't read too much into it. But darn; it does feel nice!
My wife doesn't do "full body hugs"; as she feel it's just too intimate. But she doesn't (seem to) care when I'm the recipient of an "embrace" as opposed to a "tripod hug." But then she knows she has nothing to worry about. My first wife, on the other hand, gave out full body hugs almost wantonly. Plenty of guys (including women) had the pleasure of her big boobs pressed against their chest. That was also fun to watch from the corner of my eye.