leave one’s blinker on
v. phr.— «Last column’s treatise on baseball pants pockets prompted some good responses, many of them chiding Uni Watch for not mentioning that having an inside-out pocket is often referred to as “leaving your blinker on.” And David Conley adds that having both pockets turned out is often called “having your hazards on.”» —“Page 2: What’s under your bill?” by Paul Luka ESPN.com July 6, 2006. (source: Double-Tongued Dictionary)