Klerck.org

Klerck.org is a website which has several shock images.

Spin.gif is an animated GIF file depicting an act of anal sex between two men. One man is seated, and the other is sitting on his lap. The penis of the man below is inserted into the anus of the man on top. The man on top is moving up and down, causing his penis to spin in a clockwise direction; the image is animated in such a way that the spinning motion of the penis appears to be infinite.

The man with the spinning penis has a tan line indicating he has worn female undergarments; this has led some to believe that this person is actually a male-to-female transsexual who has not yet undergone sexual reassignment surgery.

Christmas.jpg is a person stretching her anus to "goatse" proportions with a table clamp.