A mean or nasty person, the most insulting word you could use. Discovered while I was at a restaurant one day, and an Indian woman with an accent ordered roasted codfish. Me and my friend thought she said cockfish and we have been spreading it to the world ever since. It's gone as far as Pensylvania and Jersey and I don't really know, but it's definitely all over Brooklyn too.
When a male has neglected throughly cleaning his penis for a good couple or three weeks leaving a fishy stench around the head of the chode. Though not a recognised medical condition , yet, many suffer from the disease. Tang is reminiscent of but is not limited to the following fishes; Cod, Haddock, Mackerel, Tuna, Salmon, Sardine, trout, red mullet etc. Common amongst both lazy people and top swordsmen in middle England, Scotland, N Ireland and Wales.
"Listen kid, I was sat stroking my schlong in the living room last night and man my cocky-fish Itus was playing up something nasty. My nan walked in and asked if someone had been cooking fish!"
When you bang a chick and cum inside of her, then rollover and go to bed, the next morning when you go to take that first piss, you smell that Alfred Fishcock.