i like your sister
This is a way to tell a girl she’s ugly, but her sister is hot. Say it when she’s trying to get you to like her and you’re just trying to survive the conversation.
You text her: I like your sister. She texts back: That’s not a compliment.
You say it to her in the hallway. She looks at you like you just insulted her whole family.
You whisper it to her during class. She turns red and walks away.