Sweaty Herschal Share definition Flag A condition in wich a person's fecal stained underware becomes sweaty and causes a rash between ones legs. "I went for a jog this morning and came back with a sweaty herschal!" Sweaty Herschal by s2000andNOS July 30, 2008 0 0 Get merch Get the Sweaty Herschal mug. Buy Now — $32.95 See more merch