It must have been this...
Because the brain trust of Mr. Tennis and The Boston Lady cannot understand a simple Post-It note. Sure, this one is easy. Written without haste or stress. Obvious.
But this one? OMG! I wrote it to remind myself to clean or do something before my brother's visit here next week. Brain freeze! And it's not just me.
So, far, between the two of us, we've come up with "Calculus". Apparently I am to learn that before next Monday evening.
No help from The Bostons! Why should they care? It obviously doesn't say
Come on People!