The genitalia of one whom is, a noob. Noobitalia generally features a small penis and/or testicles. This is not to be confused with pencilius dickitus, also known as Ward Syndrome.
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.