i usually take my brother to lunch for his birthday , but not this year . his birthday was yesterday . why were n't you able to do it ? i forgot about his birthday . i did n't even call him ! oh man that sucks , do you feel bad about it ? yes . horrible ! i 'm sure if you apologize he 'll understand at least a little . were you just really busy or something ?
Forgetting a close friend or family member's birthday.