Term used to insinuate anal sex. Supposedly derived from "pushing tush" (to insert one's penis into an anus). Can be used for both heterosexual and homosexual relationships.
She's on? Looks like he's getting a bitta ush nush t'night then
- A person that against all evidence and self belief still chooses to go against other peoples opinions even if they know that they are wrong, just for the sake of it.
That guy is such a kushnash nush, he never agrees even if he knows he's wrong.