I was thinking the same thing I cant even figure out how to get the picture from adult work yet aloan search it for matches
(1) click on picture, to see full size
(2) where it says pictures may not be copied/close window.....right click
(3) select page source
(4) look for jpg file, which will look like "//ci.adultwork.com/f/4895673_1.jpg"
(5) copy the file without the "" "", and paste into google picture search or any similar search engine