With regard to a DIY Krummlauf, Pinky asks: "How illegal is this?"
Wrong question, dude. You're in California. The question is: "A wacky cartoon gun having been shown on TV, how long until there's a new law against it?"
And then... Vera needs oxygen around her? Naw. Results as expected. But they left out a possibility: depending how the gun is lubricated, what various parts are made of, and how long it's left in vacuum, it might just seize up.