spitball
🇺🇸
/ˈspɪtbɔːl/
🇬🇧
/ˈspɪtbɔːl/
A small wad of paper that has been moistened with saliva and then crumpled into a ball, typically used as a projectile in a classroom or office setting.
During the meeting, someone started throwing spitballs at the presenter, causing a disruption.