[quote=@Rilla]
You frown, Melon goes rage mode. xD

I'm more referring to hits that on the outside look no different. Like you've been taking normal jabs, for instance, with no IC knowledge that the character is preparing some magic to use with the jab. None at all, no energy sensing, no visual; then time for the energy to be applied, still no discernible sign(Say it just increases the power of the hit), and your character just instinctively knows.. "Hey, don't take that one, move out of the way." So instead of taking a jab that looks, for all intents and purposes, normal, you avoid it. 

Now, if it were obvious there was some preparation going on, like energy gathering in the hand(Thanks Fury), then yeah. Dodge that.

I also kinda look at metagaming as having two parts. The normal is 'yeah, the player knows it and transfer knowledge to character', and adding in stuff like you're replying to the person, not the character, especially after an argument/disagreement, and you sort of try and get the last word in via IC post. I'm sure we've all seen it before. Someone doesn't like what you did, so they throw in some snark in their IC
[/quote]

That's happened before, though people usually use. "After years of combat, their warrior sixth sense alerted them to the danger." 

Or worse someone knowing your using an illusion, or which false image is the real one.