"O.P.P." is a song by American rap group Naughty by Nature. It was released in August 1991 as the lead single from their self-titled debut album Naughty by Nature. The song was one of the first rap songs to become a pop hit when it reached number 6 in the U.S. and number 35 in the UK in 1991. Its declaration, "Down Wit' OPP" was a popular catchphrase in the U.S. in the early-1990s. It was a hugely successful single, as Allmusic described "There was not a bigger, more contagious crossover radio smash in the autumn of 1991 than Naughty by Nature's ‘O.P.P.'"
In 1998 the song was named one of the 100 best rap singles by The Source.
In 2008, it was ranked 22 on VH1's 100 Greatest Songs of Hip Hop. It also appeared as number 53 on VH1's 100 Greatest Songs of the '90s.
The title is an acronym for "Other People's Pussy", as the hint in the song: It's sorta like another way to call a cat a kitten It's five little letters that are missin' here.
It also stands for "Other People's Penis" as the hint later in the song : As for the ladies, OPP means something gifted. The first two letters are the same but the last is something different. It's the longest, loveliest, lean- I call it the leanest. It's another five letter word rhymin' with cleanest and meanest