Also known as: 妙高飛び, 妙高型クソコラグランプリ, クソコラ四天王
The unusually expressive pose and face that Myoukou (Kancolle) from Kantai Collection makes in her medium/heavy damage CG.
The pose became a Meme, especially among Japanese fans, as oddly being a shot of the actual act of the damage being dealt. Virtually all other girls are shown just bruised and unhappy with their clothing damage.
This is generally either used as the pose, itself, akin to Yamcha Pose (Meme), or else as a Mask of the expression Myoukou makes when she takes damage.