So I had a plumber over to fix a leaky pipe under the house. Funny thing, his neck tattoo only made him seem more trustworthy to me. Like, I felt he was less likely to screw me over than some other guy because of his neck tattoo. It took a minute of thinking about it for me to figure out why I got that impression, but, I think my reasoning is: he owns the business. And no one else is going to hire him, other than himself, with the tattoo for any other kind of job. So this is all that he's got. He owns his own business and if he screws it up and gets a ton of complaints or shut down or out of business, he doesn't have many options for a fallback. So, I figure his stakes on doing a decent job are higher.