1. The act of accidental, simultaneous urination and defecation resulting from a failed attempt at forceful flatulence.
2. When you try really hard to fart, but you accidentally poop and pee your pants
During my desperate attempt to fart on my fiance's Dad before the wedding, I got overzealous and shartinkled in my tuxedo. Hopefully, the two opposing smells will neutralize each other. Otherwise Steph will be pissed, that means I'm in deep shit!