twiddle one's thumbs
verb1
to circle one's thumbs around one another, usually with the fingers interlaced, usually done idly while waiting or bored
2
Idiomatic To wait or dawdle; to accomplish nothing useful or lack a useful occupation.
- He twiddled his thumbs for almost a week while he waited for somebody to set up his computer.
- Synonyms
- bide one's time, hold one's horses, fool around, lallygag, loaf about