A person who is a vigorous supporter of environmental causes who insists on extracting details of meals consumed in his/her absence, wherein there is a suspicion that those who ate the meal dined on an endangered species.
Wei: "Hey! I heard you went to that new restaurant last night. How was it?"
Kei: "Let me tell you about it later. Ferris is listening and he's such a sharkfin snoop that I'm sure he'd go ballistic if I told you everything about our meal."