Take your pick...a Google image search of "Obama, pimp" reveals it is posted on:
afterobama.blogspot.com
bunkerville.wordpress.com
dementedspace.com
woodchuck-musingsofawoodchuck.blogspot.com/
gottagetdrunkfirst.blogspot.com/2009/10/fod.html
Thanks. I don’t have time right now to check these out. But I believe the website was originally stamped on the image but was later cut off.