A phrase which was coined by a well known Belfast shoplifter on a train to Bangor. He called his wife, who was carrying nine aged plastic bags each containing a single sheet of paper, a "Clownhead Ballroot". Presumably the term Clownhead refers to someone who's head resembles that of a clown. Given the womans deshevled appearence, gaunt features and howling, it appears to have been an accurate description.

A mans head that is hairy on the sides but completely
bald in the middle.

1. A Clownhead, is a police car. "Clown", refers to the flashing lights and "head" refers to the top of the police car.

2. A snitch.

A person whose antics are entertaining, yet also indicate extreme stupidity or foolishness.