Wow you have to be really committed to something to get that done; this guy must wholeheartidly love that tat. You can't doubt the sincerity number 1 because of the pain involvedoouch!!!! number 2:where it is; theres no hiding it lol!!!
He can still grow hair there, but if someone is gonna get a tatoo like that on his head, I don't think they'd want to hide it. Whoever did that artwork is damn talented.