Sorry, it is.

Stoll writes about how as a kid he participated in a scavenger hunt organized by a neighborhood youth counselor. Unlike "traditional" scavenger hunts, this time he and his friends were supposed to find a rather lengthy list of non-existent objects, and also a yellow yo-yo, added to the list "so everyone would get at least one point". When he and his friends returned they creatively showed that they'd found the impossible objects, but nobody had found a yellow yo-yo. He writes (p. 20):

Since then, I've searched everywhere for that one true yellow yo-yo. Maybe it's hiding in some delicatessen or perhaps advertised in tomorrow's newspaper. For sure, it's not for sale on the Internet.

But sadly, it is. Actually, a simple search on eBay brings up quite a number of them.

Go to: The original star of this column, or
Go to: The internet and some of its discontents.