For two mornings in a run, you wake up with "There's a worm at the bottom of the garden, and his name is Wiggly Woo." going through your head.
You find yourself sitting cross-legged on the floor in the Glasgow Science Centre singing Old Macdonald and you don't fear arrest.
It's not uncommon to prepare a breakfast of lollypops on bagel.
You find yourself offered a stone smoothie and are warned "it's a bit lumpy and tastes of stone".
Three-in-a-bed is a bad thing.
You are familiar with the ways of Team Umizoomi and Bubble Guppies.
Knowing your outfit is likely to be accessorised by dried bogies, you dress accordingly.
A soothing session of yoga is anything but. And what do you call a downward dog with a toddler hiding underneath, or a pigeon with added small boy on the back?
There isn't really any point in trying to find out why your glasses case is being filled with salt.
"Me too," strikes a cold note of fear.
And so does: "Do it again."
Quiet, ordered and unsticky, however briefly, is a cause for celebration... only under your breath in case he hears.