A phrase describing the state where one needs to piss and shit. Because it is commonly assumed that when one must shit, they must also pee, the phrase 'piss and shit' was shortened to 'pissnshit'
Used as an exclamation, particularly used by a third party to either emphasize some shit goin' down, or to make an awkward situation even more inappropriate.
Person 1: Shit Bromethius, we just sank it into triple overtime.
Bromethius: AWWW Pussyshit!
-or-
Person A: You wanna fucking go, dickshit?
Person B: I'm gonna rape your family!
Person C: AWWW Pussyshit!
Often Associated with intense diarrhea or upset stomach, it is the act of having a very watery bowel movement. The fecal matter removes itself in a similar liquid stream fashion as urine.
Example 1: "Man, that Chinese food I had last night gave me the pissy shits!"