That's a very uneven, very badly done tattoo. I don't recommend him doing any more freestyle work until he knows what he's doing.
Man, it's cool that he's a do-it-yourselfer, but there are some tat ideas simply better left to professionals.
yeah man... it's not really cool... not at all... Like some people said it looks like a guitar string tat.
It could be worse. He could tattoo the same tattoo as the boyfriend of a girl in my class: "Yourself" isnt even spelled correctly =D