When I took debate in high school, a "squirrel" (not a gerbil, I'm afraid) was a debate argument that was difficult to counter because it was so ridiculous that you didn't have the references handy to prove it was ridiculous. IIRC, the name emerged from a debate in which one side claimed that squirrels in exercise cages could generate significant amounts of electricity.
I taught high school in the 1970s and one of my privileges was judging debate. There was a freshman who developed a case on alternative energy sources in which the energy source was fog. It was so ridiculous that his partner refused to debate it with him. So, he debated it by himself and won on points.
Sorry to be off topic, but I couldn't pass this up.
As for the subject of the original post - I want one!!!!