usually said by younger sibling to get you in deep shit with your parents
me: HA I beat you at the game
sibling: I'm telling on you
me: no ya not
*hits sibling*
sibling: WAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA MUM! HE HIT MEEEEEEEEEEEEEEEEEEEEEE
Buy a
i'm telling on you
mug!
