No, really. At an event in Brazil, a fighter is getting worked on in corner while a member of the cage crew is re-applying a decal/sticker to the cage above where he was sat. Some industrial strength glue drips onto fighter's face, the fighter thinks it's vasaline and rubs it in, gluing his own eye shut.
Happy ending though... Gluey McEyeshut won via technical decision after two rounds.
That's possibly the maddest ending to a fight I've ever heard of. Can anyone top it?