5 Required. . look at the FMC and check flap setting required ( or was it point at it ?)
5 Selected. . reach across and grab flap handle and check handle is in 5 detent
Green light. . look at (point at ? ) green light , and verify that flap position required is indicated
Of course this probably happened before this latest anally retentitive procedure, but I'm guessing it might happen again due to it.
All it takes is a narrow taxi-way ( Altenberg anyone ?) and an Aircraft a little "out of trim" on the ground (as some are) or a little crosswind, and woops there it goes again.
Maybe we should check these pretty green lights on the overhead too whilst taxying, just to be doubly sure. . . ?