to fool around, twiddle one's thumbs, stare at the wall, laze, goof off
köken: Literally, 'to dry a meat roll', where the 'meat roll' is perceived as a euphemism for penis (thus the word has a vulgar tinge); in other words, do something meaningless.
to play the nine men's morris · to twiddle one's thumbs (to circle one's thumbs around one another, with the fingers interlaced, usually done out of boredom or to show disinterest)