To take longer than needed to complete a task or arrive at a destination.Often caused by people farting about doing nothing in particular.
Although the word might have been created by a ferryhiller with reference to the original king of churf - "churfy" Murphy, the word is now more often than not directed at the residents of Ferryhill in Aberdeen.Now often reffered to as the Ferryhill Churff Squad.
"Fuck sakemin, we have been waiting for ages.The boy is having a right churf!"