Lobster mushrooms (Hypomyces lactifluorum) are fungi which parasitize other fungi, typically gilled mushrooms, and they're sometimes considered a delicacy by mushroomers.
I happen to consider this an absolutely bone-stupid thing to do, because the Hypomyces usually smothers the host mushroom and makes identification impossible--which means anyone who eats one is potentially eating Hypomyces and something deadly underneath. But there are 'shroomers who love their lobsters. - John A.
