I know I am wrong, but I could swear that Abba sing 'Super bird, trouper bird' in the chorus of Super Trouper. I know I am wrong because I have googled the lyrics, yet to me it sounds like 'Super bird, trouper bird'.
I wonder if anyone else hears it as I do?
There are some misheard lyrics which have become so well-known that almost no-one remembers the real lyric any longer.
A great example is "Come Together" by The Beatles where the line "Hold you in his arms, yeah, you can fee his disease" is transcribed everywhere these days (including in "official" lyric sheets etc) as "Hold you in his *armchair* you can feel his disease".