After his adult circumcision, Misha was advised to be gentle with his anatomy until his skin had healed completely: No tight underwear, no masturbating, and definitely no crusterfucking.
When a challenging but manageable situation balloons out of control and becomes an entrenched crisis due to the failure of authorities to perform their duties or follow up their warnings with any action or consequences.
Named for New Zealand police commissioner Andrew Coster, merged with "clusterfuck", a word for an utterly chaotic mess
"Wow, that protest turned into a total costerfuck when the cops failed to tow away any of the offending vehicles"