Looking closely at it, it looks like it could function...There's a better one from the 90s listed on Muppet Central's archive products page that actually functions. This one doesn't appear to do so. I would think the likeness could have been painted better without articulation. It's okay and very cool to have been made, but I like the Amphibian Flyer model better.
just... well, you crack the nut in his chest, and not his jaw.
And there IS no way to phrase that without it sounding horribly wrong and or morbid.