We got invited to Santa Monica to visit the grandparents over Memorial Day.  Prior to the visit, we had a number of discussions regarding what kind of behavior is acceptable at the grandparents and what is not.  Needless to say - the underwear-on-the-head trick was excluded.

And despite all our prep work - silliness ruled the day. 

And the evenings as well.   One wonders why we bothered to nix the underwear on the head!