Shiiiiiiiiiiiiiitt I knew that one too.

You're right!

It's a water rocket launcher. Fill a one liter plastic water bottle halfway, put the cork in the mouth of the bottle and lower it onto the latches. The red hose is connected to a bicycle pump. Pump it up to about 80 - 100 psi, then pull the string which releases the locking arms. Whooooooosh! My rocket sucked. Nobody likes an acrobatic rocket, but you do make the highlight reel. The best perfoming rocket had a hang time of about twelve seconds.

Its like one of those small red rockets kids used to play with way back when. Do they still make them?

This is the one - what a blast I had as a kid with my friends shooting them at each other.

Man, maybe my mind is in the gutter but I would never have guessed that thing on the bottom is supposed to be a kids' toy...

What is this?

A light.

I've read about an oxy acetylene potato gun that shot a potato from 50 feet through a 1/2 sheet of CDX.

Reflection of camera flash in Dracula's bloody eyeball.

a light source reflected in stretched red latex.

Nah, this wasn't oxygenated, just a regular copper-sweating tank. We were afraid to do anything but shoot it straight up in the air--didn't want to kill anybody!

@BigV: You've pitched a tent inside the house.

That is under the water in a pool shooting the sun.

What is this?

http://i414.photobucket.com/albums/p...r/whatisit.jpg

a bead