Day 23: How will I know when I am THeFuS?

After the waterpark, we enjoyed an excellent meal at the Proper Brewery & Grill, and they had this sign outside. We eventually figured out that they probably meant "open till 1 [one] a.m. on Thursday, Friday, and Saturday," but we pondered for a while about what THFS might mean and how one might tell they had reached that state.