1) A phrase which is used to express disgust towards a person. Not to be mistaken with monkey turd. A turd monkey is generally someone who annoys or disgusts you, but can be used on anyone who generally pisses you off.
2) A statue of a monkey made out of a turd.
1) "You complete and utter turd monkey."
2) "That's a good turd monkey there, Stan."
A turdonkey is what you call a fat chick that sits in the middle of a ski run and blocks everyone else from going downthe mountain. Combines a "turkey" which refers to a person who takes up the middle of a ski run and a "donkey" which refers to a fat, ugly chick.
I almost skied right into that dumbass turdonkey today as I skied down a run. Would of been like hitting an elk with your truck.