A Visit to the Bank

Mother decided that 10-year-old Cathy should get something "practical" for Christmas.

"Suppose we open a savings account for you?" mother suggested.
Cathy was delighted.

"It's your account, darling," mother said as they arrived at the bank, "so you fill out the application." 

Cathy was doing fine until she came to the space for "Name of your former bank." 

After a slight hesitation, she put down "Piggy."