Gashtoonkanad
To have a large night(or day for that matter)and end up at the end rather fucked up and in a bad way.See PEAR SHAPED.
"After Oktoberfest I'm gonna be bloody well GASHTOONKANAD!"Phil said to his pals as he looked out the window of the van driving through the swiss alps.Suddenly he added "FUCKN YEEEEAAA!!!!!"