What about Wednesday?
So a sailor walks onto a ship the captain grabs him by the shoulder and says "Welcome to my ship! We have everything a man could want! Food when you're hungry, water when you're thirsty, and.....whenever you get a "need" just stick it in the hole of the barrel below-deck every Monday, Tuesday, Thursday, Friday,Saturday, and Sunday! The sailor asks "Well, what about Wednesday?" "That's your day to get in the barrel!"