Let's pretend to be fish.

"I'm wet and I don't even know it."

I call the hot dog car!

It's back up and working fine now.

They are tubes of measured gunpowder for muzzle loaders.

Edit: the tubes themselves are called gazyrs

If you put them in all terrain mode, they make great river shoes. You can't stub your toes in them like those thin slip on ones and they are bulky enough that your feet don't get wedge between rocks.