"C is for Cookie" is one and the other is when they do a count for the number of the day.
C is for Cookie, that's good enough for me,
C is for Cookie, that's good enough for me,
C is for Cookie, that's good enough for me,
Oh, cookie cookie cookie starts with C!
ETA:
I dont remember if Cookie Monster sang this or one of the other muppets.
Yeah it's silly I know but i'm bored
