Tattoos on a gentleman or lady that would insinuate that they are a tool. The best identifier is a tattoo of barbed wire, the persons last name, a heart, unicorn/dragon, or trampstamp.
DAMN BRO THAT GUYS GOT SOME SERIOUS TATTOOLS!
(n)equipment and instruments used by tattoo artists to create tattoos
"Big Tony definitely has the largest tattool collection I have seen. His tattools allow him to meet the requests of all types of ink freaks."