Told this before but after being asked twice in the past year how long it is since I jumped on the City bandwagon (once by a dipper and once by a rag) I've learned to say I started when City got to the F.A. Cup Final. Then pause and add "against Newcastle." Best then to let them work it out, if they can.I was joking mate.
Anytime anyone accuses me of being a glory hunter I reply "Yeah, since 1968 when we won the league, then went on to win the league cup, then the FA Cup and the Euro..."
It tends to shut them up