The context of the following conversation is Robin's brother was hungry, so Robin cut the sandwich in half.:
Robin says I just made this killer Dagwood sandwich! Doea it not look yummy?!.
The friend responds Robin, you know you haven't feed your little brother..
Robin responds He's old enough to make his own lunch..
The friend responds Robin! I don't thing a four year old should hold any sharp object to slice the bread loaf?.
Robin responds Yes, you are right. Alright,  I will give him half my sandwich..
The friend responds Wait! Cut it in thirds, please, how about me?.