What is Fuck Juice?
1.
The funky mixture of juices and liquids that is generated when people fuck (e.g., sweat, sperm, and pussy juice).
Damn', we got fuck juice all over your new sofa.
2.
semen that is ejaculated from a man's penis (preferably into a girl's gaping ass and or mouth)
"Holy Hell dad! You blasted your fuck juice all over my chest! It's so warm! (and it burns like the dickens!)"
See