Why not?
All you need is some artistic ability and MS-Paint.
Here is how you play:
1. Go to DeviantArt.com
2. Click on the "Newest" tab in the "Drawing" section
3. Look for really shitty/mediocre art
4. Go on MS-Paint and redraw the picture you selected in a humorous style
5. Upload your masterpiece
6. Comment on the Deviant's picture telling him/her that you made some "fan art" with a link to your work
7. Share the art and reaction to your fan art here
You get the best results from the animal (
http://www.deviantart.com/#catpath=digitalart/drawings/animals&order=5) section.
Here's some of my work.

(Link to Deviant:
http://fc09.deviantart.com/fs49/f/2009/206/a/6/wolf_rioo1_by_rioomir.jpg)
"
oh my god thank you very much this is the first time for me Your my new bf 8D im thrilled"

(Deviant's work:
http://fc03.deviantart.com/fs49/f/2009/206/2/e/Adoptable_no_1_by_NativeFoxFC_Adoption.jpg)
"
Umm, thankyou...
Its a native fox though..."