It's nice to share with your friend.
Brian brought a burger and fries to lunch and sees that Tim didn't bring anything at all.
Brian wants to eat his burger and fries.
Brian asks Tim if he would like to eat some of his burger and fries.
Brian eats the burger and fries voraciously in front of Tim.
Tim happily accepts the offer and eats lunch with Brian.
Tim watches Brian eat with a depressed look on his face.