(normally considered vulgar) penis (from Yiddish; shlang 'snake'; cf. German schlange) - the Oxford American Dictionary; a Yiddish word, common to what
is known as the New York City dialect of the English language
Mary: "Check out the bulge in that dude's pants!"
Anne: "That's either a pair of socks in his shorts, or he's got one-hell-of-a schlong!"