My Flatmates Argue A Lot

This morning:

M: Hey, I'm going to the store later, text me if you want me to get you anything.

N: Ok.

J: (Off screen) Text her Iced Tea.

M: No, I'm not getting you sugar water.

J: If you don't come back with something to drink...

M: What, J, then what?

J: Don't come back at all.