When I lived in Manchester my mate went to the same barber for years. The barber was a massive blue and my friend just sort of nodded along with his various Man City rants to humour him. But then one day he asked him directly if he was a City fan and he foolishly said yes, even though he didn’t really like football.
From then on he used to have to look up the results and read the team news every time he went, so he could maintain the lie. When I asked him why he didn’t either just confess or go to a different barber, he claimed the guy ‘really understood his hair’ so it was worth it.