Oh it may have been a little mental; willingly offering to let someone else shot him with a taser gun, however the simple fact of the matter was that doing it himself was something of a pain. Last time he tested out a taser on himself...well it worked, too well. That current shocking his body, and causing every muscle to seize up. Including the finger he had had on the trigger.
Void recovered in seconds thanks to his stolen power, but he was literally stuck last time around until the damn battery finally died on him. Five an a half minutes of continual pulses had been more than enough to annoy Bryan, especially since his regenerative ability kept him conscious the whole damn time.
So when she accepted the taser and posed the question Murphy just nodded and stood a few feet away. Waiting for her to fire. "No need to be gentle. Give it a good thirty seconds or so before stopping."