Those of us that remember the following verse, sung by Wally Wightman, are hiding our age well!

A B C D E - goodbye from Willum and me (who or what was Willum?)
F G H I J - we'll see you another day
K L M N O - it's time for us to go
P Q R S T - and it's time for Willum's tea

he never got as far as - U V W X Y Z