Cakes are Items in Birdday Party. They are worth 3000 points when destroyed. In the latest update of Angry Birds, a new exploding cake appears, but when you hit it, it turns into frosting-like balls, similar to TNT Crates. But they don't explode. Also, in the current version, they won't award you points.
In Angry Birds Seasons, they also appear and are worth the same number of points.
They also appear in Angry Birds Friends, where are more found commonly. They worth 5000 points when destroyed. There are a lot of variations of the cake.
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