A person (especially a police officer) likened to one of the Keystone Kops; also used allusively and in similes describing shambolic or farcical situations.
Origin
Early 20th century.
Definition of Keystone cop in US English:
Keystone cop
(also Keystone Kop)
noun
A person (especially a police officer) likened to one of the Keystone Kops; also used allusively and in similes describing shambolic or farcical situations.