I will appreciate all answers from guys and girls though people who have experience in tattoooing or any other art form will be very helpful. Anyway a great idea can come from anyone )
Most Helpful Guy
Forehead. "I will regret this sooner than I think". Spelled backwards / mirror image.
Be sure to pick a nice font.
Sorry for the sarcasm. Many people think ink is sexy - you mark up a perfect body, kind of violating it, for the sake of getting attention. Some of those people genuinely think tattoos are okay while others (guys) would accept anything conspicuous on temporary / casual girls only. More so in the case of tramp stamp tattoos.
I think dragons and hearts and mermaids and butterflies and kanji (Asian letters) just scream "even for a tat on my own body I could not avoid a cliche)
Something cool and futuristic would be interesting, like a QR code (a square barcode type patch, google it) that actually works. E.g. if scanned with a smartphone it can contain a link to your FB or home page or other info.