Apparently Wednesday is Hump Day, can't say I've ever heard this before.
I heard it first in the context of someone we'd met at the hotel leaving the next day .. Wednesday. So I thought it was used about people who did mid week to mid week or weekend to mid week bookings.
Apparently not ... seems it's much more simple. Wednesday is half way through the week, you're over the hump and heading downhill to the weekend.
Sounds good to me. In future I'll be raising a glass to Hump Day 🍷🍸🍹🍻