In male circumcision, either infant or adult, nothing is "chopped off". A small bit of skin is clipped and snipped around until it comes off. There is precious little blood or trauma, and it is healed within a couple of weeks at the utmost.Maybe we can get over the drama to the original question.
Does adult circumcision hurt? There would be mostly soreness and some extra care to the penis after the procedure.
The area around the foreskin would be desensitised with some kind of -caine (lidocaine or the equivalent) and there would be no pain during the procedure. There would be no emasculating, ear chopping, ball-popping, voodoo, or any of those kind of things.