It keeps something that cannot be kept,
And wakes you when you've slept.
It may go slow or stop at times,
But even then it chimes.
It holds no blessings in disguise.
Its rhymes are aimed at your demise,
it's cast only to ruin,
Whatever you are doin'.
It flies when it's on and floats coming off.See answer
Select a pack of riddles and try to solve it in an interesting way.
This riddle appears in the following downloadable PDF files: