To sit in your bedroom and study in solitude. To ignore the outside world and only focus on the pointless expensive study your parents encourgaed you to do. To give up on life and realise the world is to expensive so studying is your only option.
"Dude I haven't seen you in like six months" "I've been in studitude" or "Where do you go all the time?" "I spend my hours in my fortress of studitude"