He means mischief is the thoughts f a desperate man he thinks bad things because he is a impatient person
A·loof
əˈlo͞of/
adjective
not friendly or forthcoming; cool and distant.
"they were courteous but faintly aloof"
synonyms:distant, detached, unfriendly, antisocial,unsociable, avoidant, remote, unapproachable,formal, stiff, withdrawn, reserved, unforthcoming,uncommunicative, unsympathetic;
informalstandoffish
"part of their strategy is to remain aloof during the first stages of negotiation"
conspicuously uninvolved and uninterested, typically through distaste.
"he stayed aloof from the bickering"
to discover the theme in a poem or work of fiction, you must first find the main idea
I’m guessing that’s “stay gold ponyboy” , which is a play on the phrase “nothing gold can stay”. Johnny is trying to tell pony to stay true to himself and be good.
