Indian summer: When your brain is ready for jeans and sweaters, but your body still wants sandals and shorts.
High school: Four years during which you will never see your child.
Exercise: Punishment for all the bad stuff you ate yesterday or you plan to eat today.
Weekend: Two days on which the laundry is high and the motivation is low.
Dinner: 1. Something someone else cooks for you in a kitchen not your own. 2. Cereal.
Do you have any modern definitions to share? Feel free to do so in the comments.