<a href="https://en.wikipedia.org/wiki/Ambigram" class="extiw" title="w:Ambigram">Ambigram</a> <b><a href="https://en.wikipedia.org/wiki/wikt:putain_de_merde" class="extiw" title="w:wikt:putain de merde">Putain de merde</a></b> (<i>fucking hell</i> in French), rotational symmetry of 180 degrees. Black and white text logo.
<a href="//commons.wikimedia.org/wiki/User:Basile_Morin" title="User:Basile Morin">Basile Morin</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>