Childhood habits

As professor of psychology at Blacktoolslot university
(yes, you all thought you were clever until I came along)
my students have been researching childhood habits that die hard.

Our work has paid off and we are pleased to announce that we
have pinpointed the most popular, but most elusive, of childhood
habits and it is that of continuing to 'go on' tiptoes when sitting
down for a number 2.

Have a merry Christmas one and all. And don't forget to check
your cupboards for biscuit beetles.