A little burst of 'your city is blue' will shut them up.
That said, why worry about a bit of gloating? If you were 17 and your mum wouldn't let you go to the league cup final but has relented for the FA cup, and has even promised to buy your return train ticket from Worthing, I'm sure you'd be...
'Seen f*** all' would be appropriate.
I recall them playing in tier 2 in the 70s, and their entitled nonentity fans toured the country causing chaos. Classic small winkle syndrome. 'They' haven't won anything. It's the big boys on the pitch that win.
Never mind. Gloating in front of fans of a...