Yet another, slightly milder version of internet trickery (See: Meatspin, tubgirl, goatse and lemonparty) where a repeated clip is shown of a man lightly tapping his penis with a hammer.

A website featuring a looping image of a man repeateadly hitting his penis with a hammer, to a clip of the song "U Can't touch this" by MC hammer.
There is also a title of the page, reading "Welcome to the pounder".
The pounder is a shock site, designed to shock unsuspecting internet browsers thinking that the site is about something other than hitting your penis with a hammer.