Humberto Brown fought Gabriel Benitez in an undercard fight at UFC 180, and his fighting wasn't the main thing people noticed.

Can you spot something wrong with the blue shorts worn by the #UFC fighter so perfectly named, Humberto Brown? pic.twitter.com/FZlvpiehAj — Melanie Dinjaski (@MelanieDinjaski) November 16, 2014

Humberto Brown has something brown in his pants! #UFC180 pic.twitter.com/hJiG1dgjw9 — MMA GIFS (@mma_gifs_) November 16, 2014

Humberto Brown shards in UFC 180 fight!! Wow!! Then gets choked out!! #ufc180 #mma pic.twitter.com/JZBXwlQym4 — Eddie Washington (@EddieWashingto9) November 16, 2014

We can't be 100 percent sure that's poop, but ... that's poop, right? That's poop. He pooped himself. During a fight. On the one hand, we're surprised this doesn't happen more often because athletes have so much physical activity going on and no bathroom breaks and sometimes they might slip. On the other hand ... he pooped himself.

Brown also lost after Benitez put him in a guillotine choke, and got a point deducted for trying to hit Benitez in the groin, so, not his best night.