Sure, it's in a seedy neighborhood and, after 2 a.m., a downright dangerous one. But Crazy John's East, smack-dab in the middle of the Block and next to the city government's Benton Building, does what every other institution on the Block does: makes being bad feel very good, for a nominal fee. For merely $4.47, you can get, 24 hours a day, a made-to-order cheese steak so large you could probably use it to seriously injure one of the bulky doormen who spot this stretch of Baltimore Street. Crazy John's uses real flank steak, chops it very finely, overstuffs the 6-inch roll, and slathers it with hots and mayo, rolling it so tight that the ingredients mix with the still-melting cheese to create a delightfully rich and spicy sauce. You best wait till you get home to eat it, though, because it's a potent soporific.