A shit nack occurs when someone puckers up their stank hole and just toops toops toops scedoops on your face until you have a brown dot on your nose that you can use as target practice.
Shitwack, or shitwhack is the Canadianequivalent of shitload. Less than a fuckton, more than an assload, the Canadian shitwack is equal to 1.2 American shitloads
-noun
The unfortunate occurrence of a bowel movement that crests the rear band of an infant or toddler's diaper, resulting in yellow, curdy staining of the child's back and clothing (and often furniture, parents, and household pets).
Hand me the shitjack (pointing to the remote control). I need to hook my DVD player up to the shitjack. I need to program a shitjack to query data from MySQL.