An ear that protrudes from the head, surrounded by long hair, thus resembling that of a monkey.
Person1:
"Have you seen the state of your hair?"
Person2:
"What's wrong with it?"
Person1:
"Your ears are poking out of ur hair, you've got a right monkey ear going on."
Person2:
"Oh arse."
This is usually were a boy looks like a monkey when cheeks are inflated and ears stick out!!! This is cute and does not mean the boy has to be hairy just to have some rsembelence to a monkey!!