Groundhog dayting is when a person takes his significant other on the exact same date multiple times in a row i.e. pizza hut and then a movie.
Martha broke up with Timothy for Groundhog dayting. He had taken her out for pizza 6 dates in a row.
Do as you're told. Usually used in the text messages
Boss: "Please have this done by three."
Worker: "I have something else at hand"
Boss: "DAYT"