When Does the Mundane Become Memorable?

    Now: that's when: when nothing else happens of any significance.
       Today I went to the Customer Service Desk at Lowe's, and returned an  unused item I'd bought but no longer have any use for. It was inexpensive but I didn't need it taking up space in my drive to de-clutter. 
      The clerk, Nicole, was friendly and helpful, and as she handed me my refund, asked, "What  does 7.47 sound like  to you?" "Well," I said, it sounds like an airplane." She seemed to think it kind of funny.
      I browsed through the store, checking out the plants as I usually do, looked at the sale items, then found the birdseed aisle and bought a bag, the kind that is meant to  attract cardinals, since we have several apparently staying in the evergreen tree out front.
     I brought my purchase to a register, one with the shortest line.  The store was busy: the most purchased items seeming to be those  featured in the store displays---home improvement stuff. So many people buying paint.
    As it happened, the cashier was Nicole, evidently having been called over from  Customer Service.  She rang up the birdseed and said, "8.49, just a little over the 7.47 you just got back."  I told her she had a good memory.  She laughed and said, "Only for some things."