The ultimate in macho tattoos is undoubtedly this one, a railroad tattoo across the biceps. The tattoo has excellent detailing and looks as if it has been made just to etch itself on this guyâs arms. The best thing about the tattoo has to be the black colour; any other colour would have ruined the effect. It is an absolutely stunning design, done up with equal magnificence. Kudos to the tattoo artist, it sure seems like a genius’ piece!