
Title text: I have to pay with paper money.
…wait, irons used to be made out of iron?
…wait, glasses aren't made out of glass?
…wait, rubber ducks used to be made out of duck?
Not sure if I knew that people called aluminum foil "tin foil", since my family always called it aluminum foil, and I assumed tin foil was something different (which it looks like it sometimes is). (Of course, in England, it's made of aluminium instead of aluminum.)