Its meaning comes from a baby that has just been born and is still wet "behind the ears" among other places.
This term might alternatively have originated on the farm, as it is said that after birth the last part of a foal or calf to dry is the area behind its ears.
"Those con artists thought they could make a quick buck out of me; they thought I was still wet behind the ears. But I showed them!"
A man or women, unmarried, and living like a house wife or house husband. A house mouse is very pampered and well cared for, in exchange for this the mouse takes care of the house and anything elts to keep master happy.
Either liquid niquil or any liquid drink with melatonin, Ashwaganda or other sleeping aids in a liquid form. If warm tea helps you get to sleep that could be sleepy juice too.
I could not sleep so I chugged some sleepy juice and now I'm so tired and sleepy.