play dumb

child's play

Something particularly easy or simple.

dumb as a post

Utterly mute; lacking the ability to speak.

dumb down

To convey some subject matter in simple terms, avoiding technical or academic language, especially in a way that is considered condescending.

dumb luck

pure chance; luck

dumb shit

Alternative spelling of dumbshit.

go play in the traffic

To go elsewhere and feel free to engage in risky behavior; to get lost.

grandstand play

A successful play or other manoeuvre during a sporting competition in which one or more players shows off unnecessarily in order to entertain or impress the spectators.

hold-up play

A play where an attacker retains possession of the ball, while the teammates can move up the field.