Basic Trope: A character's younger sibling is annoying
Straight: Alice's little brother, Bob, steals all her toys, reads through her diary, and embarasses her in front of her boyfriends and friends.
Exaggerated: Alice's little brother is pure evil, playing cruel pranks, destroying Alice's property, getting her in trouble with their parents for crimes she did not commit, and harming all of Alice's closest friends.
Downplayed: Alice's little brother teases Alice at times, but get along most of the time.
Justified: Tormenting Alice is Bob's way of being a part in her life.