quizzywig - the term comes from conversations that commedians had when they appeared on the Johnny Carson Show on American TV.
There were two levels of appearence, either you did your slot to the audiencec, and sat dowqn with Johnny, or you just did your slot to the audience, which was regarded as less impressive.
This got abbreviated to - "I hear you did Johnny Carson, what did you get - sit-down or stand-up/"
and the exprerssion has come over here to refer to any commedian who delivers a routine to an audience with a microphone.