Take a creative photograph. You can modify it, morph it, mess around with it and have fun with it. If you have the time tell people how you did what you did and if you have the inclination - why.
Creative: creative use of line, form and colour, expressing the photographer's ideas and/or feelings in a non-traditional style - not porn and if it even smacks of exploitation - it's gone.
In photography creatives are stock photos and images. So I guess those are welcome too.