1.The undisputed privilege for anyone to ask unreasonable favors of his/her pals on a single's birthday. The word seemed to have comes from the right to automated shotgun using one's birthday celebration it is additionally applicable in many different circumstances that'll feature: performing their laundry, operating all of them around, becoming their particular wingman and paying for food.whilst the birthday man may become appearing like a massive douche, the privilege only continues each day and so the other pals can handle it until their particular birthday comes around. 2. In infrequent cases, the term "Birthday Rule" has additionally been familiar with satirically justify everyday asshole-ish behavior. This isn't quite like initial use of Birthday Rule as the asshole-ish behavior occurred with regards to wasn't the guy's/girl's birthday.