You do know that's an Urban Legend? Also false is the notion that Muslims believe they will be barred from heaven for touching or even eating pig.
I'm just saying, if you can make something work on the pure physological front, why not use it? Something physically totally harmless, but emotionally devestating. Hell, extremists tend to ignore most of their scripture anyway (the important bits about not killing etc), if you can find an idiot that thinks bathing in a tub of lard will ban him from all eternal bliss, by all means threaten him with a porkfat bath. Start dipping his toes if he still refuses.
C'mon, Jokey, after all it's only their religious foolishness that has them hold these beliefs, no? ^_^