I want to write my girlfriend a letter and send it through the mail, but I don't want her parents to read it. What can I do?

Wants Privacy

You can use a mask like General Clinton did during the Revolutionary War. Okay, he was British, and his side lost. His code technique was a success. You'll need to write your real letter inside the mask and then add other words around the mask to make it look like a real letter.  Be sure your girlfriend has an exact copy of the mask you use to write her your letter.  To see how a mask works, visit this website: http://www.si.umich.edu/spies/letter-1777august10-1.html

Sneakily,  Mrs. Covert