hold the cap
v. phr.— «At yesterday’s hearing, Rep. Delmar Burridge said he hopes a law change will give incentive for low-level members who don’t “hold the check” or “hold the cap”—street lingo he heard in his 35-year career in juvenile court in Philadelphia—to “snitch.”» —“Lawmakers target top thugs” by Lauren R. Dorgan Concord Monitor (New Hampshire) Apr. 10, 2008. (source: Double-Tongued Dictionary)
Further reading
Lynn from Philadelphia, Pennsylvania, says her mother used to urge the kids along with Put your shoes on, Lucy, don’t you know you’re in the city? The line comes from a popular song first copyrighted in the mid-1940s that goes in part Put your shoes...
A playwright from Philadelphia, Pennsylvania, wonders if anyone outside her home region says they’re going down the shore to mean they’re “going to the beach.” Go down the shore is often used in Eastern Pennsylvania, New Jersey, and parts of...