I've a stopper here for your lying mouth.

Just to put the stopper on, so to speak.

And once in space and ready to begin, the astronaut uses the plunger system to release the fruit flies...

A syringe consists of two parts, a glass tube and a plunger, both normally made of glass. Gasses flow into the glass tube, and as the syringe is a closed system, the plunger moves outwards. This can be used to measure the volume of a reaction.

We'll set the charges against the piles about three feet under the water, I should think and run the main wire downstream to the plunger.

A cork borer, often used in a chemistry or biology laboratory, is a metal tool for cutting a hole in a cork or rubber stopper to insert glass tubing.

It was a bit of a road stopper, which was problematic because the police kept on trying to clear away the crowds, but huge fun it was great for me to do a performance.