"The divorce genie" joke

This guy is walking down the beach . He spots an old brass lantern in the sand . He picks it up . And starts knocking the sand off .
And this genie pops out of the lantern .
And declares . I am the divorce genie .
The guy amazed but dumbfoundwed says .
What in the hell is a divorce genie .
The genie says . What ever you ask for your ex gets two of .
And I am granting you three wishes .
What would you like?
So the guy thinks for minute .
First wish .
I want a Mercedes Convertable .
Poof .. Brand new Mercedes Convertable .
And the genie says .
Your ex just got 2 of these .
So for the second wish .
The guy says . I want 10 million dollars cash .
Poof he has 10 million dollars cash on the hood of his Mercedes .
And the Genie says .
Your ex has the same thing on each of her Mercedes .
So the guy says . Let me get this straight . What ever I wish for . She gets double .
And the Genie says yes .
So the guy says .
For my last wish . I want you to beat me half to death .