There's something odd about saying my brother's full name to Siri each and every time I want to text her with my voice. Why isn't Apple's personal assistant smart enough to know who's in my family? Actually, you can teach her.
Start by long pressing the home button, then say "[Insert name here] is my brother" or whatever the relationship is. From now on, you'll be able to text, call or set reminders with a more personal touch.