The VOIDRUNNER'S CODEX is LIVE! Explore new worlds, fight oppressive empires, fend off fearsome aliens, and wield deadly psionics with this comprehensive boxed set expansion for 5E and A5E!
I was hearing "kuchi", which is Japanese for mouth and written like a little box: 口. Which doesn't make any more sense, really, but now you know where the naughty euphemism came from.