Is a large man who after consuming massive amounts of alcohol, goes into an uncontrollable, unstoppable rage after failing to bring home a girl from the bar. The loose juice tends to break anything in site in order to satisfy his caveman like needs to release his juice.
Alex came home from the bar extremely intoxicated and acted like a loose juice, smashing bottles in the street and punching holes in the wall while his friends watched unable to stop him.
When referring to all alcohol.
"How much loose juice do you have for the party?"
"Past the loose juice"
"Your tern to get the loose juice"
"Man have a thirst for loose juice"
"We're out of loose juice"
"Where are we going to get loose juice at this hour?"