piggy banks

[sweetfennel]

how is it that a pig became a bank?

[THECORBYLOON]

In the Middle Ages, a cheap clay called pygg was used to make everyday items such as jars or dishes and coins would be put into a pygg jar or dish. The word "pygg" sounds the same as "pig" so a piggy bank is a pun on the word "pygg."

[Trillipse]

or indeed,

how did the banks become such pigs?