Darn it

A few minutes ago, HT walked into the room and in an irritated tone said, "Darn it!" This "expletive" is fairly new for him. I asked him what was wrong and he replied, "one of my Pokemons fainted." This is on his DS game. He seems to be really into it! I was further amused when he announced, "I have a confused Pokemon." When it comes to those things, he has a confused mother as well...I just don't get it!