Hot tattoo designs would translate to exotic, dangerous, bold, and, you got it, erotic! Never, ever mix "cute" and "hot". A smiley or a butterfly would not make your man go gaga over your new tattoo design. The design needs to be strong to give out a feeling of sexiness and power. A dragon tattoo, perhaps toned down a bit, by accentuating its other features like face and eyes, could translate to sexy and dangerous, but being bold and different at the same time!