Italia 90, without doubt my favourite
Mostly for the Mascot and the Coca Cola mini footballs we all had, Cameroon, the games being on at normal times, Pavarotti, the San Siro, Argentinian long haired strikers, Lineker having a poo on the pitch (someone find the YouTube video please), and last of all, being an England fan, supporting a bunch of men in tight shorts playing for your country, that you actually genuinely thought you wouldn't mind seeing win something. I think every other squad has always had a John Terry or someone like that
Still remember every game of that World Cup pretty much. Can barely remember a game from the last few competitions