A cockhorse is one of those toy hobby-horse thingies that have a broom with a horses head

( prodigy69, Wed 30 Jan 2008, 12:40, archived)

Those? Even when I was a kid I realised how shit they were.
'It's just a head on a stick, mum.'
( Captain Wow feed your head, Wed 30 Jan 2008, 12:40, archived)