Clapping

I am keeping separate thoughts in separate posts.  The Bug started clapping today!  I was at work and grandma called me to talk about something else and then said, off hand 'Ive never seen her play pat-a-cake with me, this is new...'.  Uh, yes!  We have been working and singing and encouraging her to clap for at least 6 months.  It is quite adorable to see her do.  Its not even a college try, she is really doing it, and WELL.
This is the thing about Isabel.  She gives NO indication that she is understanding the least bit of what you are asking her to do, not even an attempt at it.  And, then one day, she just full on does it, like she's been practicing for weeks.  Same with sitting up.  Slouch.  fall over.  noodle back.  Boom-sitting (11 mo for the record).