This is a video of a giant marshmallow bear getting blown up and deflated in a vacuum chamber. I remember my high school physics teacher (Mr. Link) did the same thing with some marshmallow Peeps. I learned a lot that day. Mostly, that marshmallow peeps still taste the same even after a trip through a vacuum chamber. After a trip through a Dyson vacuum canister? I vomited.

Keep going for the video.

Source: Geekologie – Giant Marshmallow Bear Versus Vacuum Chamber