Not An Integral Part Of Calculus

(My younger sister decides to have a spur-of-the-moment movie night, but doesn’t want to stay up too late.)

Sister: “[Film #1] is three hours, but [Film #2] is only two-and-a-half.”

Me: *looking at [Film B]’s box* “No. It says 144 minutes. That’s not even two hours.”

Sister: “Um. Sixty plus sixty plus twenty-four…”

Me: “Oh. Duh.”

(My parents have overheard.)

Mom: “Weren’t you in a math class last semester?”

Me: *overdramatic* “Calculus, Mother! We didn’t learn addition!”