Cok O Pops is a breakfast cereal manufactured by Biglogs, seen advertised in Grand Theft Auto: San Andreas and Grand Theft Auto IV. In Grand Theft Auto: Vice City Stories it is sold in Fidl, retaining the same design from GTA San Andreas. The cereal's slogan is "Start your day with a mouthful of cok!", which is a reference to oral sex. The cereal's name is a reference to Coco Pops, while the usage of a cockerel mascot is a reference to various cereal products, like Kellogg's Cornelius Rooster, in Corn flakes, or General Mills' Sonny the Cuckoo Bird in Cocoa Puffs.
- On the Cok O Pops box, the Cok O Pops chicken is being choked, a euphemism for masturbation.