circa 2006, Supermarket's definitions

OPD

The drinking of Other Peoples' Drinks, specifically at a bar or public venue. Typically done without the consent or knowledge of the original owner that his/her beverage is being taken.

"Hey, that was some great OPD'ing last night. Lots of tables, lots of dancing.....perfect conditions."

by circa 2006, Supermarket May 22, 2012