acronym stands for Head Canon Accepted. Often used in context with fan theories.
Destiel? #HCA
harpswell coastal academy… what an interesting place ! we got the racist rednecks, mixed with some furries, and all of us lgbtq liberals ! oh yeah it’s also a garage <3
mta bitch: isnt hca just a bunch of greasy people?
hca: nahh we are just all mentally ill