Let's hope it's not another Marilyn Monroe quote!

Lindsay Lohan added to her body art collection last night, and decided to post a pic of graffiti 'artist' pal Staino etching his masterpiece on her arm as she grimaced in pain!

We wonder what the newly sober star is getting this time?!

The rehabbed redhead already has Billy Joel song lyrics and Shakespeare quotes, just to name a few, so we wouldn't be surprised if she went a different direction and got something pretty rather than wordy!

Give us a sneak peak, Lilo!