The illusion of spontaneity is created.
The way in which one delivers words, phrases or whole sentences should give the impression that they are being uttered for the first time. To help the audience believe what is being said, speech must sound fresh and natural —not stale and rehearsed like a classroom recitation. Timing a joke is like dancing a waltz —the performer must be smooth and graceful and have a feel for the tempo.
Professionals make humor look effortless. But they rehearse