Imagine two basketballs. Each dangling on a thin string in a deep freeze.
On the first ball, start pouring a stream of chilled water, enough to allow a few drips to fall from the bottom. On the second, I apply only enough water to allow surface tension enough time to freeze the water. In a perfect scenario, the latter would eventually close up at the bottom. (the nucleus will be slightly offset) The former would form a frozen tail. If you did enough of them, some might stick to each other or the walls.