Old Japanese Phrase.
It means "Shit between your toes." and is used in context of "It can't be worse than having shit between your toes."
Was first used after the first and greatest emperor of Japan walked into the Celestial Garden, forgetting about God's dog; Amaretsu, and it's enormous shit piles.
Japanese factory owner- Oh my god! This is the worst day of my life! My whole buisness is gone! All that work wasted.
Japanese factory worker- At least no Shi-tween-to, huh?
Japanese factory owner-... Hm, yeah, I guess not.