Long, droopy, withered, wrinkly breasts that hang down flat on a woman's chest, looking like a pair of used johnnies (condoms).
"Man, I walked in on mother-in-law while she was getting dressed."
"Hey, did you see her tits?"
"Yeah, but I wish I hadn't. She turned and flashed them at me, but the sight of a couple of chest johnnies turned my stomach."