To have one's actions be controlled by another individual(s) due to inebriation, cognitive impairment or death all whilst maintaining the outward pretence of autonomy.
Derivation: From the film 'Weekend At Bernie's' where the titular protagonist was puppeteered through a number of jolly japes whilst being deceased.
Joe was so drunk that he needed to be Bernied all the way home.
Joe was so senile that we Bernied him all the way through his presidency.
A phrase to describe someone receiving the maximum allowance from the UK WelfareSystem. In the UK these are know as Social Benefits, hence being on "Full Benefits" or "Full Bennies"
" Hey Rob, How'd you afford the wedge to run that Japanese whip "