It's Poison/Fighting.... So I have no idea how that happened...
Unless you got tricked by a Zoroark...?
Nope, no Zoroarks. It's just that I can't, for some reason, remember its typing so easily. I know every pokémon's typing by heart (even Drapion's), but Toxicroak always gets me. I think it's just too dark-like to me and Poison/Dark reminds me of Drapion and then in comes Bug-type and well I'm screwed. Being immune to Water and "weak" to Fire also doesn't happen.