When a prisoner, while on his way to jail/at jail, all of sudden has 'difficulty breathing', 'extremely high blood pressure' or some other form of bogus medical condition. The prisoner by law must be taken to a comfortable hospital bed with free food to by cleared medically. This can often take hours - thus avoiding a cold cement cell a period of time.
"I was a block away from the jail when my prisoner got a case of 'jailitis'. I was stuck sitting at the hospital with him for 4 hours.