All Gate and Gaiters, and a Pig on the Knee
The term all gate and gaiters can be used to describe someone, or something, that is all show and lacking genuine substance, i.e., “That new ship announcement was all gate and gaiters.” Used in this way, gate means big talk, bragging, or even mouthing off, i.e., “Bloggins was gating off at the Boatswains.” In the same vein, gate can be used to refer to the mouth, as in, “Shut your gate.”