Parody on LetMeJizz
The mix-up is always with cosplay, but this is a full send-up of a known movie or show rather than just costumes thrown on. Writers rework famous characters and plots into an X-rated version, leaning on recognizable scenes and a wink at the source. The humor matters as much as the sex, and the best ones commit to the bit from the sets to the dialogue.
155 parody videos here, all HD and all free. New ones go up daily, so check back if you don't find your scene first time around.