Anticipation for Christmas Day

My son, Shane, has become totally obsessed with presents. He kept saying "Where are the bags?" He did see Eddie bring home a bag with a toy in it even though Eddie tried to hide it. Anyway, we keep telling him that Santa will bring presents on Christmas Day which is December 25. Since he is a visual learner we got the calendar and circled the 25th and wrote presents. Everyday, we tell him what day it is and how many days are left until Christmas. Since we have done this we have not been harrassed...