DM: "The warrior of the Red Hand army chuckles to himself as he looks out the window, staring at a cloud formation that vaguely resembles something provocative--if you squint at it just right. You raise your blade, focusing on the small gap between the scales of his armor above his left kidney, and tense your muscles in anticipation of the attack. Roll to hit!"
<dice roll>
DM: "The subtle movement of the air behind him causes the warrior to shift on his feet, just as your blade strikes home. This warrior must have seen more battles than you anticipated, and contorts his body to absorb some of your thrust, turning what would have been a lethal blow into gaping flesh wound instead. Wincing in pain, he turns to face you, with his mace held high. Roll for initiative."
Player: "What do you mean he didn't die, I totally sneak attacked him!"
[Player2: "Where are the Cheetos?!"]
DM: <sigh> "Well, his fighting instincts seemed to kick in, and he was able to survive your attack. You should probably roll for initiative now..."