warning about stupidity
<a href="//commons.wikimedia.org/wiki/User:Kenrick95" title="User:Kenrick95">Kenrick</a>; original author was <a href="//commons.wikimedia.org/wiki/User:Betacommand" class="mw-redirect" title="User:Betacommand">Betacommand</a>
CC BY 3.0
<a href="//commons.wikimedia.org/wiki/File:Stupidity_is_contagious.jpg" title="File:Stupidity is contagious.jpg">File:Stupidity is contagious.jpg</a>