Dude #1: hey dude, what does JFGI mean?
Dude #2: Just Fucking Google it yo.
Dude #1: I tried but i couldn't find anything.
Dude #2: JUST FUCKING GOOGLE IT!
Dude #1: bro. i already tried that. don't be mean.
Dude #2: bro, your an idiot.
Joe felt extremely out of shape, and horny in a homoerotic prison fetishist sort of way, so he took the day to go jfgi and satisfy all his cravings at once.
This is an acronym which stands for: Just Fucking Google It.
It is used as an exclamation of frustration when a person is asking you questions that could easily be answered with a simple Google search.