hah! Funny stuff. I was talking about this as an off-topic a few weeks back.
Of my 5, 2 of my cats emerge from their boxes, post poop, like a bat out of hell.
Kowe (female) races down the stairs (hardwood) and skids at the bottom, practically crashing into the fridge. Cat-chirping the whole time. Then she grooms excessively because she is embarrassed (heh).
Roo (male), instead of racing down the stairs, races up the cat tree, often unable to stop at the top perch, and continues onto the curtain rod. Wild eyed and manic.
We can always tell who just pooped, out of the 2, by who goes where and does what