mash attack

when you've been typing for ages and you're fingers duff up and just mash the keyboard for relief

(typing) so i was walking down to bob's house and (fingers duff) sfjkscjvbkdskjcnbkisd ngfbn gjed gjodf oyujh d godfiogv ghntoei vngoerig ptgpb... whoa that was a serious mash attack!