what does hump mean anyway in the us!?!
Haahaahaa!
Well..........the "adult" version equates "hump" to sex.
However, in general terms, when someone says it's "Hump Day", it means we're at the middle of the week. If the week were a hill, Monday and Tuesday we're going uphill. Wednesday is "hump day", as we're at the top of the hill, and then it's down hill towards the weekend.