When you dry/hang your shirt on a wire hanger and the hanger causes the fabric to stretch out and creates a small imprint resembling a nipple on each shoulder.
That chick be sportin' shoulder nipples! That beezy best be gettin' some padded shoulders beetch!
Bitch, best start neatly foldin' yo laundre.
The bumps you get on the shoulders of a shirt when it's been on a hanger for too long.
Wash the shoulder nipples out of your shirt.
n: the small bumps that form on top of the shoulders of shirts (typically men's, but not exclusively) after they have been hung on clothes hangers.
"I wanted t wear this shirt today, but when I took it out of the closet it had shoulder nipples on it."