Am I the only one who needs something like a "Nevermind" ping? For when you ping someone back, who has half health and go in 1v2, but he is a god and kills everyone? Or for when you ping missing because the guy should be roaming, but 2 seconds later he emerges in lane from fog of war? Or you make a badd Baron call? Anything really. Back me up and let it happen!
Edit: Or when you ping "on my way", but something comes up and you don't come anyways?