Bear's arse 

Anything that is really rough. Usually the feelings you get the morning after a hardcore drinking session.

I'm feeling as a rough as a bear's arse.

You look as rough as a bear's arse.

Bear's arse by Codein October 10, 2009

monkey looking out of a bear's arsehole 

An ugly woman with long frizzy hair

Winsome was the spitting image of a monkey looking out of a bear's arsehole.

monkey looking out of a bear's arsehole by Poll Hereford November 2, 2009