David Copperfield is doing his magic show and asks if anyone would like to
show him a trick. 
"I will", replies a guy in the audience, "but I'm going to need your wife 
Claudia and a table." 
"Ok", says David and the guy gets on stage.
He then bends Claudia over the table, pulls down her knickers and starts
fucking her from behind. David is now very pissed off and says, 
"That isn't a trick!!!"
The guy just looks at David Copperfield and replies,
"I know, it's fucking magic."