"Cliff jumping" joke

A man is running along and falls off a cliff - I don't know why he falls
off a cliff, he just does, OK?
As he's falling he manages to grab onto a tree about 15 feet down,
growing out from the side of the cliff. Now he's hanging there and he
looks down and sees this 200 feet drop below him, but he knows he's
only 15 feet from the top of cliff. Looking up he cries out for help,
"Is there anybody up there?"
Much to his surprise he is heard. A voice replies which can only be
that of the lord (the reverb has been turned up and there's too much
bass), "Let... go..."
The man looks down at the 200 feet drop, and then looking up once
more, cries out, "Is there anybody else up there?"