<a href="http://www.jurito.net/otro/shutup/xtina.html">Goddamn funny</a>. 
Requires Flash, has (loud) sound, and is <em>definitely not</em> work-safe. 
Though I guess that depends where you work, right enough.



Courtesy of <a href="http://www.mrry.co.uk/">Derek</a> (who else?)