Take away his credit card
or
By relocating it to a casino!
or
Drinking, bathing, washing, swimming, etc.
or
None. They will never find one that burned as brightly as the first one.
or
The banana split
or
A swordfish
or
None; assholes never see the light anyway.
or
Half a worm.
or
Two. One to do the screwing, and one to hear the confession.
or