When people decide something is art, then it's art . . . no matter how crappy it looks. And SCARLETT JOHANSSON'S new tattoo is a testament to that.

Scarlett got a poorly-drawn horseshoe on her ribcage, along with the words "Lucky You". And it looks like a CHILD drew it. (TooFab)

The thing is, it was actually drawn by a famous French artist who goes by the name FUZI. And this is just his style. He does a lot of tattoos, and they all look like they're poorly-drawn. Here's a gallery.

Scarlett's a fan of this guy . . . so we have to assume she's very happy with her new ink.