For a prison to be closed down under such circumstances would indicate it must have been well and truly shithouse. Hence, 'boggo' is used to describe any person or thing that is extreme in some way.
"Can you believe that cunt who murdered all those people? He's totally boggo"
"The surf is huge." "Yeah mate, it's fucken boggo"
Rad, Sometimes boggo is rad (see examples)
"fuck that band was boggo last night" A brutally heavy band.
"i cant beleive how boggo that test was" It was a very hard test. "that chick was a fucking boggo she sucked the shit out of my cock!" She was a very talented lass.
"i stabbed your girlfriends face off with my dick and fucked her with a rake" Clearly a boggo.
"gee that guy isn't very boggo much" This refers to an overly boggo person.