They're self rising Pillsbury biscuits (or similar). Not what Americans call cookies that Brits call biscuits
And yeah, they come in a tube. The plastic/papery wrap is structural to keeping the pressure on them. It's pretty neat packaging design. This is the first I've heard of the little pop being considered scary though
Surely that attachment is significantly stronger than the sidewall. Even if you tried I think you'd just split the sides along the spiral impression and couldn't launch the top
I always wondered why the instructions were so emphatic that it specifically be opened by pressing a spoon against the side of the seam and today I learned its because this guy keeps trying to lose an eye and they don't want to be held liable for that.
People with broken flight or fight responses (usually due to trauma, not always involving loud noises) hawe issues with the loud pop, even when you know its coming causes the flight or fight response and takes a lot of effort to calm yourself down.
Its not scary per se, its aggravating a broken somatic response.
Don't think of a sweet dry disc (what Americans call a "cookie"), think of a thick round doughy scone, slightly salty and buttery, designed to receive either sweet (various jams or jellies) or savory (fried cured meats, eggs, cheese) accompaniment.
It's funny that this distinction needs to be made every time biscuits are mentioned in the post. There were some very confused non-Americans in the comments of a biscuits and gravy meme the other day
True, but in my experience opening the tube is nowhere near as violent. Biscuits in particular, I suspect by virtue of their yeast content, cause the kind of danger referenced here.
There are also a lot of dough based things in a tin sold in Europe. I know that a French company is selling everything in cans under the german brand "knack & back"; bread rolls, croissants and even pizza dough
I'm European, Swedish, and these have been common for over a decade. Most common here is in "pizza kits", you get one tube like in the post but with pizza dough and a glass jar of tomato sauce with herbs.