draw straws

Meaning

1. To decide at random by drawing (selecting randomly between) straws, sticks, etc., one of which differs from the others (typically by being shorter), held in a person's hand so as to conceal which is the different one. Typically, whoever draws the short straw must complete some undesirable task. Alternatively, whoever draws the longest straw gets a desired position.
2. (broadly) To decide by any means of chance.

Synonyms

draw lots

cast lots