A shitmiss is when you miss without realizing why, seemingly for no reason. It can also be when you miss an easy hit, usually repeatedly. A shitmiss usually occurs in the form of a choke.
Guy 1: *almostFC, chokes*
Guy 2: lol
Guy 1: I KEEP SHITMISSING FUCK THIS GAME
A fecalphobic response to the necessity of having to wipe one's own uptarded ass whereby said swine mummifies his/her hoof with a crapper clogging amount of old growth toilet paper in a daily All-American celebration of excess and waste.
That shitphobic corporate pig, Dick Cheney, nuked my crapper, then clogged it with his uptarded shitmitt.