Shisterhosen Share definition Flag (n.) Literally German for "Shit Pants", this is an exclamation used to proclaim exhaustion or a royal fuck-up. SHISTERHOSEN! I can't believe I just nailed that tool in the crosswalk! Shisterhosen by Skenns March 13, 2009 0 0 Get merch Get the Shisterhosen mug. Buy Now — $32.95 See more merch