Windowlicker - Aphex Twin
Completely stuck in my head. 1999 Techno/Intelligent Dance Music. The outro is featured on the film Grandma's Boy.
BTW: the easiest way to find this song is to google the video, however, I cannot recommend the song this way since its extremely explicit language (intro part) and very suggestive and just straight up wierd imagery.
EDIT: i think the video is cool though... haha