You are traveling through a rainforest when you are bitten by a venomous snake. You know the female of a certain species of frog produces an antidote for the venom and you can save yourself by licking it. You also know that the only way to distinguish males from females from afar is that only males of this species croak, croaking is random and independent of other frogs, and that the population is evenly split between males and females and can be considered arbitrarily large. You hear some croaking behind you and turn around to see two frogs of this species. What is the probability they are both male?