DH got a tattoo 15 years ago that his mom is still unaware of. His brother has a lot of tattoos that he keeps under wraps from his mom. Years ago, my MIL discovered one of BIL's tattoos the morning before his graduation and got so mad that she skipped his commencement ceremonies. She is very old fashioned and thinks tatts are only for bad people and it erases all of his accomplishments! Ha, she only knows about 1 tattoo and BIL now has about 20!
I don't have any tattoos but I would be sad if my kids hid them from me!