it's an expression, like if you juice something you're going too hard and trying too hard or taking everything for what its worth even when you know there's not much more to it.
can be said in different ways for the lulz
"this is a juice"
"this is juiceful"
"this is juicin it"
"this juice type shit
Wrestler 1: The ref called locked hands when one of his hands was on the other guys head!
Wrestler 2:Yeah, dude juiced it.
"The biology teacher gave us a 14 page final exam review when the exam is only 8 pages. She's juicing it."