(like, it's just the katakana for "gu-ro" in a particular typeface and colour, which you would have printed onto a buff coloured shirt... anyone who would recognise it AND admit to it is probably not someone you want to deal with... which leaves either the terminally curious squares who you'd have to make up some bullshit explanation for, or anyone who can read kana and asks you why exactly you're walking around with a shirt with that word on it)