I emailed my mom some questions for a piece for class I'm trying to write (and failing - I'm really stuck) about twins. From my mom:

"One odd twin fact I'll add. I warped your brains for most of your third
year trying to toilet train you guys. Nothing. Then, in April, in a single
day, you decided this would be a good idea. You switched from diapers to
panties and never went back. Sarah was unmoved by this example for three
months. From April to July, Sarah watched you use a pottie, day and night,
without fail. Then in one day in July, Sarah decided to convert. She also
did it in a day."

Ha ha! In your face, Sarah!