A man walks into a pub with his dog and bets the barman 500 that the dog can talk. The barman takes him up on the offer thinking the man was mad. So he says to his dog “What is on the top of a house?” and the dog says “ROOF!” then the man says “whats my wifes name?” then the dog says “RUTH! then the man asks “what is the most important person on a football pitch?” and the dog says “REF!” Needless to say the barman throws them both out and as they’re laying on the pavement the dog looks at the owner and says “Defender?”