The way in which they use each cushion as a separate cell to create structure is reminiscent of plants which get their rigidity from the osmotic pressure that pushes against the cell wall, also known as "turgescence".

I've surprisingly realised that I need to grow up, when I giggled at the title.

Don't. Growing up is overrated. As the old saying goes: growing older is mandatory, growing up is optional :-)

I know what you mean -- the word pneumatic cracks me up every time! ;)

https://www.youtube.com/watch?v=DuSDdJIcmHU&ab_channel=Natha...

Sometimes, despite ourselves, we have to endeavor to maintain a stiff upper lip.

If I'm reading you correct, that'd be hydraulic rather than pneumatic.

It may be a bit of a stretch, but a certain International Man of Mystery might disagree.

Well...I have another interesting idea based on peristaltic locomotion of a robot bio inspired by earthworms. Hard pass?