Takes me back to the days when utility bills used to be paid by cheque. When feeling angry, it was fun to under pay by a penny. A few weeks later they’d send a bill for the penny with a return envelope for my cheque. Happy days!
Or cut the bottom magnetic numbers off my cheques so they’d have to be processed manually if it was the bank that annoyed me.
Or rub wax over those bits of forms where it said “do not write here,” so they couldn’t write there either.
