I was fighting Ruby Weapon, trying to kill him by less usual means to what I normally did (in other words, no KotR) when this happened...

All he could do from then on was Ruby Flame and those swing attacks; no countering with Comet 2 and Ultima! What this implies, of course, is that I was fighting him for a damn long time and should have had the guy dead already, but whatever... It made me laugh.

On a side note, I attempted to do the same to Safer.Sephiroth, but after two hours I still didn't get anywhere so I just hammered him with Angermax and mimed it a couple times.