wrinkly (adj.)youdaoicibaDictYouDict[wrinkly 词源字典]
early 15c. (in reference to the penis), from wrinkle (n.) + -y (2). As teen slang noun for "old person," from 1972 ("old" being relative; a British reference from 1982 applies it to people in their 40s).[wrinkly etymology, wrinkly origin, 英语词源]