For those of you who missed the Popples reference, Popples were a thing of the 80's - small fuzzy creatures who flipped inside out into their pouches to bounce around as a fuzzy balls. The name "Popples" came from the popping sound they made when they sprang back out the ball. There's some more good Popple info in the description of this ebay Popple sale.
I would feel dated by those of you who missed the reference, except that Mary caught it and she's barely 20. So there.