Well, that's technically not the best example to give.
Putting your hand on the bottom head, as opposed to not having one their to start with, has the same effect as choking the drum by reducing its ability to resonate overall.
Furthermore, there is such a thing called destructive interference which is easily caused by having two heads that are not in tune with themselves. I actually use this concept to assist with tuning, in fact, as I shall explain:
If you hit the drum and the sound fades in and out in volume, you are encountering destructive interference. What is happening is that the air pressure created by the vibrations of the heads is cancelling out the noise by being both equal and opposite. The reason it wavers is because the heads are not in tune with each other, and therefore you are getting a crossover point where because each of the heads is vibrating at a different rate, the air pressure is constantly varying.
As such, the key to discerning how to tune the drums using this concept is in listening to the speed of the waver. If it is very rapid, the heads are more out of tune, and if the waver is very slow then they are close to being in tune. Have you ever seen a guitarist tune using harmonics? It works exactly the same way.
Theoretically it should be possible to use destructive interference to remove all sustain from a drum and have only the initial attack, but if this is what you want then maybe just go buy a cardboard box and hit that instead