Stage Directions

In is Down; Down is Front.

Out is Up; Up is Back.

Off is Out; On is In.

and, of course,

Left is Right and Right is Left.

a Drop shouldn't.

a Block and Fall does neither.

a Prop doesn't.

a Cove has no water.

Tripping is okay.

a Running Crew rarely gets anywhere.

a Purchase Line buys you nothing.

a Trap will not catch anything.

a Gridiron has nothing to do with football.

Strike is work (in fact a lot of work).

and a Green Room usually isn't.

now that you're fully versed in theatrical terms,

Break a Leg,

but not really.