mono-dialogue

1. One person (mono) having a discussion as two distinct people (dialogue). 2. To outwardly carry on a debating or discussing with yourself as two distinct personalities. 3. To talking to an imaginary person as a routine.

Flip Wilson stood on stage all alone for over an hour delivering a hilarious mono-dialogue between he and someone named Hester Sue debating the meaning of life. It was pretty darn funny to watch..