Julia wanted to send a letter to her friend Ariana. She chose to put ink stamps of shapes and animals all over the envelope. I thought she just wanted to decorate it.
After she was done she asked me, "Did you put our house number on the letter to Ariana? Does she know where we live?"
Me: She will when she gets the letter. We just need to send the letter with Daddy so he can put a stamp on it.
Julia: But I already put stamps on it!
Oh!! Finally I understood why she used her stamp set to put stamps all over the envelope. She'd heard us talk about putting stamps on letters so we could mail them.