
I would say it's a joke
( , Fri 6 Dec 2013, 12:12, Reply)

The Cock Inn
Church Lane, Sarratt, Hertfordshire WD3 6HH
Also, that joke seems to go back to at least 2004.
( , Fri 6 Dec 2013, 12:17, Reply)

... I went to meet a quite (in my circles, at least) famous professor in his favourite and much frequented local pub, The Black Cock. Imagine the near universal apathy as I tweeted @[name of professor] loves the black cock.
( , Fri 6 Dec 2013, 15:46, Reply)