Susan: No one's certain every minute. Not me, not you.
Everyone wants to run and hide
Sometimes, now and then.
Everyone has a little fear inside
Occasionally.
Lots of folks used to suck their thumbs,
And anyone can say something dumb.
So if you (?), don't cry.
'Cause everyone feels a little...

Big Bird: Don't have to embarrassed!
Both: 'Cause everyone feels a little shy!
Sometimes!
Occasionally!

(After that Big Bird feels much better and says he going to call David's Grandma back. He runs off to do so.)