Break Away Rose by Mr. Magic
The Break Away Rose is a great and funny comedy item. When held casually in your hand, it appears to be JUST A ROSE ON A STEM. But the moment you hand it over to a spectator, the stem breaks apart, and droops. You can take it back, and immediately it becomes a rigid stem once more. But if handed over to the spectator, the stem is in pieces again. The look of surprise on your spectator's face makes this effect hilarious for the rest of your audience. This can be introduced any place in your show.