Link
http://i.imgur.com/jeWxd0Q.gif
more general porn pictures in category porn_gifs
more general porn pictures in video channel porn_gifs X tube
from #thread (https://reddit.com/r/porn_gifs/comments/1ufe7i/who_can_find_the_source/) by @cio9999
You might have to ask the tumblr owner KIQX for this one. Searched all over, and he seems to be the gif maker.