I had this debate with Matteh during the world cup and according to him me, or any one who is a big team supporter is a bandwagon fan (mostly).
I want to clarify on this because I am not very sure what a bandwagon fan actually means.
I followed FC Barcelona when
a) They were not the best side in the world or in their league (they were third AFAIK). Real Madrid was the big team. I wasn't aware of all that nitty gritty any way.
b) I wasn't aware of any other Barcelona fans.
c) I liked their style of football and started to follow them.
Was I bandwagon jumping? What comprises and doesn't comprise being a bandwagon fan?