Retromingent
Urinating backwards.
Also an animal such as a raccoon that urinates backwards.
As in: 'You have revealed yourself as a miserable, carping, retromingent vigilante, and I for one am sick of wasting my time communicating with you' (Benjamin C.
Bradlee, Editor, The Washington Post).
From the Latin retro- (back) + mingent from mingere (to urinate)