go in the out door

all dressed up and nowhere to go

Elaborately attired or otherwise fully prepared for an anticipated situation or activity which, nevertheless, fails to occur.

all systems go

Everything is ready.

as you go

While one is doing (something); as one progresses.

bang down the door

To present oneself as a strong candidate for a role or achievement, explicitly or implicitly.

boldly go where no man has gone before

To break new ground.

close the stable door after the horse has bolted

To attempt to prevent a problem that has already occurred; to design and implement a preventive mechanism that is too late (after the first failure instead of before).

come and go

To repeatedly appear and disappear; to be transient.

darken a church door

To go to church to attend a service.