Backyard roast?

A framing nail gun would do the job and be real quick...Try doing it with a knife..you are going to have hell of a fight trying to cut through a hogs skin with common kitchen knives..and if I miss..the fight is on..get a nail gun(framing gun)..and a quick squeeze of the trigger drive a 4 or5 inch nail right into it's skull and make it painless...for the bo5th of you