A treat to celebrate one's birth day and is usually valid for a period of 7 days before/after the birth date
If your birthday is on 4 th December then your birthday treat for your friends and family should be arranged either on your birthday or within 7 days after/before the actual date. A valid period helps everyone to demand their treat, while helps you avoid social awkwardness.
by quack4duck November 08, 2013
Can you define these popular missing words?