When the worst day of someone's life is a normal everyday occurrence for someone else. Often used for either gatekeeping or humour purposes.
1. "The worst day of your life was when you were on a fishing boat during a storm? Here in the navy, we call that 'Tuesday'."
2. "Heh, Super Mario literally sees walking evil mushrooms who will kill him instantly and he's not weirded out by it? I guess seeing all these creatures is just another Tuesday to him."