Personalise this item with 16 different colors and 8 different sizes design available on different clothes and items t shirts sweatshirts baby clothes mobile cases bags sheldon has a ritual individual of calling to the door due to his obsessive compulsive trends his call consists of three blows before saying the name of the person and then it repeats the process twice more this way of calling associates especially to his visits to pennys apartment but she is his so called general f