The act of someome pretending to have a tattoo that they
don't actually have.
This is commonly achieved through image theft, photoshop, temporary tattoos, henna, fabric arm sleeves, markers,or even something as simple as verbal bluffing.
This is a separate phenomenon from people who sport
fake tattoos or henna for costuming, acting roles, or decoration without the pretense that the "tattoo" is permanent.
If you find out that you're being tatfished by someone, RUN. The same people will
fake pregnancies,
suicide attempts, and all manners of things without remorse.
"Did you see Kaylie's awesome new chest piece that she posted on
Facebook last week?"
"I just boned her yesterday. Her chest was clear. She's tatfishing you, bro."
"I realized he was tatfishing me with his pubic 'tattoo' after my saliva smudged it."
"Everyone knows that if you ask someone if they have a tattoo and they allude to having
one somewhere private, there's a
50/50 chance they're just tatfishing you."