Four or more people sneak up behind the speaker and set chairs down so that "the speaker can't see them." They then begin to go through the motions of casting a line and reeling it in. After a while the audience is watching what the group is doing and then the "speaker" looks over and asks, "What are you doing?"
"We're fishing!" is the reply of the fishermen, after which they go back to their motions and the speaker resumes talking. After a short time the speaker looks over and says - "But you can't fish here!"
"Why not?" asks another fisherman.
"Because there's no water here!" (speaker)
"Oh, well, they weren't biting anyway!" (fisherman)
The fishermen then turn their chairs so that they are lined up in a single line, facing in the same direction. They go through the motions of putting their gear away, and then, acting as if they are rowing a boat, slide their chairs backwards across the stage."