Anthropology: Maybe ask first.
Herpetology: bad plan bad plan BAD PLAN
Sociology: Yes, if you have time and dedication and a willingness to piss a lot of people off.
Botany: You might hallucinate or die, OR it might be delicious
Computer Science: the tingle of electricity on your tongue is how you know it’s working
Epidemiology: FOR THE SAKE OF THE WORLD PLEASE DO NOT
Linguistics: Despite the name, please probably don’t.
Engineering: Maybe, but it’ll probably taste like spreadsheets
Neuroscience: that is someone’s brain. no. do not
Astrophysics : Could taste like space or rocket fuel….best not
Quantum Physics : You can lick it while not licking it at the same time
Science is tasty but please do not actually taste it
Geology: Please lick this rock
Scientology: Licking costs $1000