What song has Snoop Dogg sayin westside come out and play in the intro?

The song you're referring to is "Murder Was the Case" by Snoop Dogg. In the intro of the track, he famously says, "Westside, come out and play," which sets the tone for the song. Released in 1994, it's one of Snoop's notable tracks from his debut album, "Doggystyle."