In Good Riddance by Greenday, it will play the first 4 notes. Then a slight pause, then the next 4 notes, and right after he plays that he goes f*** really softly. So if you turn it up loud you can hear it
I guess this slipped out of his mouth during the final recording. Something might have happened while he sang the song that made him say f***. They had to remove the short guitar solos at the beginning for the 1997 version of the song. Anyway, cool egg!