Here is a short list of signs that you stayed out too late. Of course, when I say you I really mean me.
1. You just passed 33 Rockefeller Drive for the third time.
2. You are bleeding from the shin.
3. You find yourself at DJ King's crib.
4. You are driving with no shoes.
5. You stop at Burger King for a late night bite and find out they are serving breakfast.