Bunber (noun)

A musical theatre number that requires ballet dancers.

E.g. ''We'll need some betties for the dream bunber in Oklahoma!''

Focus Pocus (incantation)

Chanted by stagey people the world over before difficult or high-pressure tasks such as auditions, ISTD examinations, reaching flat splits and filling in a tax return.

E.g. ''I can do this... Come on! Focus Pocus!''

Jock around the clock (phrase)

An accidental manoeuvre involving male dancers’ naughty bits. This familiar sensation is worsened by wearing an optimistically large jockstrap. 

E.g. ‘’Why are you sticking your hands down your leotard?!’’
        ‘’Sorry miss, I had Jock around the clock...’’
        ‘’Fair enough then lad’’
 

Jounce (verb)

To leap into the air and swoop down upon your prey. Derived from 'Jazz Pounce'.

E.g. ''There was this super hot guy in the street so I totally jounced him.''

Stageyring (verb)

Like staggering, but on pointe.

E.g. ''She's on her second bottle of gin and she's stageyring all over the place...''
        ''She really shouldn't have gone on''