To fool away

to get rid of foolishly; to spend in trifles, idleness, folly, or without advantage.

See also: Fool

References in classic literature ?
They were not likely to fool away this high promise for lack of effort.
I always hate to fool away a humorous thing on a person who has no perception of humor; and it filled me with bitterness when this man went soberly away to submit the last proposition to his principal.