for a man, it means "other ppl's pussy"
for a woman, it means "other ppl's penis"
*where a person can have a girlfriend/boyfriend while having someone else on the side without it being considered cheating on their lover.
Early 90's hip hop slang, popularized by Naught By Nature. In the song, O.P.P. stands for "other people's property" but colloquially it's known as "other people's pussy." This is inferred by the song lyrics and the general pondering of one being willing to cheat on their significant other.
Other People'sPhotography... To be down with O.P.P., one must be broke and lack ownership of a camera therefore relying on other people's photographs to upload current pictures on Myspace or Facebook...
O.P.P stands for Other People’s Pussy or Penis or Property. The catch phrase “Down with O.P.P.” was coined and made popular throughout the the early 1990’s. And suggested that if you were down with O.P.P. that you would be ok to engage in sexual relations with someone already in a relationship.
New Jersey rap group Naughty By Nature released their song O.P.P. in 1991 and solidified the term forevermore.