Cosmo, please take note:
I have made a further discovery regarding the life of the frequently-spotted pyjama mama. Previous to this current exposure to the breed, I believed that they only delivered their children to school wearing their night attire.
After further study in recent times, I am able to confirm that they also collect their children from school at 1.30pm, still sporting their night attire. Even in the rain.
The other, more distressing discovery I made this week is that I am now teaching my pupils kids :-(