(noun) A maneuver which entails acquiring the original of something or someone even and replacing the original with a fake or a forgery.
Tina got ahold of her mom's entire bottle of narcotic painkillers. Knowing that her mother would never take any of them, Tina simply pulled the 'ol switcheroo and emptied the bottle of painkillers and substituted their absence with some kind of laxative pills that looked very similar. Tina was on her way to Junkie-dom.
Abbreviation for On Course Side.
A sailing term used when a boat is over the start line early (on the course side of the line, as opposed to the starting box side of the line) and which results in the boat getting disqualified from that race.