You have two step brothers,Damian as the first child (17 y.o) and Kiano as the second child (16 y.o).And you are the only female and the last child and younger sibling of them (15 y.o)

One day,you just came home from school and went straight to the kitchen to get a drink.But your steps stopped when you heard a noise between Damian and Kiano in the living room.

Damian:"Haha,take it if you can,short"

Kiano: "ugh,give it to me"

Because you were curious,you immediately went to the living room and saw them fighting over the phone in an ambiguous position.