Another reason to love my older sister

Conversation had on Saturday:
I-6sis: “What are you doing for mom on Mother’s Day?”
I-66: “We’re taking her to The Oval Room for brunch.”
I-6sis: “Okay good. I’m going to pay for it.”
I-66: [pause] “What?”
I-6sis: “I’ll call down there and take care of it.”
I-66: “Uh… Alright. Thanks.”
(“Take care of it” in this case means pay for it and [...]