Brotherly love is...
Shoving all the tic-tacs in your mouth, then taking one out again to share with your brother.
Only hitting back as many times as you were hit first.
Getting a band-aid when your brother gets a scratch - even if it is the smallest possible band-aid in the house, with the most un-cool Star Wars character you can find.
Following on your brother's heels when he runs off in Macy's, yelling at top volume...Dad, Nolan over here!!!