This tattoo was spotted at BMEzine.com. This person probably would never guessed his macho tattoo said "eunuch". For those who are not familiar with the concept or the term of "eunuch":
A eunuch is a castrated human male. The castration can be only of the testes, or also include the penis, known as a penectomy (often with a tube inserted to keep the urethra open, called a urethral rerouting). The practice was established before 700 BC and accounts of eunuchs are known throughout history.
In ancient China castration was both a traditional punishment (until the Sui Dynasty) and a means of gaining employment in the Imperial service. At the end of the Ming Dynasty there were 70,000 eunuchs (宦官 huàn'guān, or 太監 tàijiān) in the Imperial palace. The value of such employment—certain eunuchs gained immense power that may supersede that of the prime ministers—was such that self-castration had to be made illegal. The number of eunuchs in Imperial employ had fallen to 470 in 1912, when the employment ceased. The justification of the employment of eunuchs as high-ranking civil servants was that, since they were incapable of having children, they would not be tempted to seize power and start a dynasty.