Critical Remark, Smart Response

(My sister and I are heading to our car, and I notice her shirt tag is sticking up.)

Me: “Tag! Tag, tag, tag! TAG!”

(I fix her tag.)

Sister: “Use complete sentences!”

Me: “Oh, excuse me, I couldn’t help but notice that the little piece of paper indicating the size and brand of your shirt was slightly sticking out. May I fix it?”

Sister: “Or you could just say, ‘Hey, your tag’s sticking out. Let me fix it’.”

Me: “Geez, I didn’t know you were so critical.”

Sister: “I didn’t know you could be such a smart-a**.”

Me: “YOU DIDN’T KNOW?!”