Cooked turkey was obtained by during the Thanksgiving Beach party by speaking to the gnome Chef. Players could only possess two cooked turkeys per inventory. They couldn't be banked, when attempting them a message would appear in the game chat saying "A magical force prevents you from banking this item!" Consuming them heals two hitpoints and you receive the message "It heals some health, for which you feel thankful." in the game chat.
Some were discarded because they weren't cooked correctly, and players are able to kick those around. These could be kicked anywhere, even up White wolf mountain and across the water onto the water obelisk island. They would despawn after a short while if left alone away from the beach.