A synecdoche or “pars pro toto” derogatory term for a woman which characterizes her by her vagina. Doughnut=Vagina=Woman. Adding a possesive pronoun indicates a relationship beyond friendship but not necessarily intimate.
Stan: "I think my doughnut is cheating on me."
Bob: "Really, why?"
Stan: "At first I was finding clothes and stuff in the dresser that weren't mine, then she changed the lock, then I got a restraining order"
Bob: "Dude, I think that makes you a stalker"
Stan: "Yeah, but do you think she's sleeping around on me?"
Bob: "...Maybe,but...oh well."
Bob: "Really, why?"
Stan: "At first I was finding clothes and stuff in the dresser that weren't mine, then she changed the lock, then I got a restraining order"
Bob: "Dude, I think that makes you a stalker"
Stan: "Yeah, but do you think she's sleeping around on me?"
Bob: "...Maybe,but...oh well."
by Mastermynd May 08, 2006