horse-hung adjective2 •(slang, vulgar) Having a large penis.I was in a seated position, my ass resting on the stranger's fantastic endowment. My hands reached behind me for support, but the horse-hung mystery man had me, his arms clamped around my chest. — 2011 •(slang) Large.The marine sergeant drifted off for a moment, his legs relaxed while his fucking horse-hung dick began to soften enough for the sailor's stretched out lips to ease up somewhat. — 2010
