The substance females develop under they're saggy breasts after not washing for long periods of time, a little like mold or the slime you get between your toes.
"put your bra back on, untill you get rid of that golk i'm not sucking on your nipples mom."
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.