Looks like Selena Gomez is trying her best to shed that good girl image!

The Wizards of Waverly Place actress is starring in Funny or Die's "Fifty Shades of Blue" ... a parody of the sexualized novel "Fifty Shades of Grey."

In the video, the 19-year-old starlet is letting her mind go wild over a not-so-sexy painter. Sounds weird, right? Just watch and you'll understand.

We have a feeling the video made her beau Justin Bieber chuckle ... at least a little.