My all time favourite [after f*** u and the horse ...] Has got to be The higher the monkey climbs the tree the more he shows his a**e [as in some people the higher promoted they are make a div out of themselves] Whats yours?
With regards to driving on the road, I always say 'too many w*****s and not enough lanes' or when you see someone particuarly ugly or someone you don't like my mum-in-law always says 'you don't 'arf see some sights when you ain't got a gun!'