See at the bottom http://www.omnimaga.org/index.php?action=profile;u=7964
His sig can be seen in the following thread: http://www.omnimaga.org/index.php?topic=14003.msg256838#msg256838
Note: The signature used to be a massive pony personality test image followed by a smaller one which took an entire computer screen height together, so I assume that staff spotted it then edited it, so I'm unsure if it's related (it's possible if an admin edited the signature directly from MySQL), as I haven't checked his profile when he had the other sig.
Still kinda weird, though. It reminds me the glitched threads from the minus world.