Hi. Mods, can you guys help me out with something please?

I was banned 3 days ago, probably from this board. Thing is, I have no idea why. Pic related says that I posted mlp or something pony-related, but that's it. No link to the offending post, no nothing. I'm almost certain that I didn't post anything mlp-related. I'm so confused.

Could you guys have a look and tell me why I was banned? What happened?