Easiest way to do this is make a list. So here's a list.
Dearest little brother, I forgive you for the following offenses:
1. Death threats (I don't even know how many there were, man, lost count a looooooong time ago)
2. Nightmares ( ....not a
word)
3. Making me feel useless and irrelevant on as many occasions as you delivered death threats
4. Stealing the best chicken legs / cuts of meat / ice cream /etc.
5. Changing the channel in the middle of one of my favorite shows
6. Spilling my paint
7. Allowing yourself to be captured by those Akatsuki assholes
8. Leaving me at the mercy of Temari that one time I had chicken pox...which was probably the lowest you've ever stooped
Ever.