In one episode, Fred visits this tuba player's apartment and offers to play the tuba himself. First, Fred took a deep breath into the mouthpiece and said "Nothing comes out." He was later instructed to blow thru buzzing lips. On his second try, Fred is able to make the tuba produce sound, but it emits a funny farting noise. What makes it funnier is that the camera closes up on Fred blowing into the tuba raising his eyebrows.
In some episode intros whenever Fred would zip up his sweater when he reached the part of the song that goes "Let's make the most of this beautiful day..." He would stretch the word "beauuuuuuuuuuuuuuuuutiful..." as he zipped his sweater. Sometimes Fred would even grin into the camera as he did so.