If you want that tattoo erased it's going to hurt and it's going to cost you

Colin Farrell's had it done — many times. So have Angelina Jolie and Megan Fox. Heck, even Bart Simpson did.

Whether it's Marilyn Monroe's face, Billy Bob Thornton's name, a sultry rose or even Bart's partially inscribed homage to his mother, some tattoos simply have to go for one reason or many others.

Stream Los Angeles News for free, 24/7, wherever you are. WATCH HERE

But the process of taking them off is longer, much more costly and ouch — extremely more painful than getting them put on, according to professionals in the industry.

Also, due to health reasons, some souls who braved the ink needle, should be wary of the laser when having their body art erased or covered up.

Tattoos have been around for centuries

The oldest known tattoos were found on remains of a Neolithic man