Oh, go
ahead... But I beleive that cucifixion has never been used as a
 suicide method. 
 No. I've tried it dozens of times; there's just no way you can hammer in
 the last nail. 
 
I have this image of 4 of those butane-powered nailers used by builders
suitably arranged nad with a remote triggger facility. You get your arms
and legs in the right places, somehow press the switch and bang...
No I am NOT thinking of trying this.