Haha, I was expecting a worse question than that! I will say, you're not the first one to comment on it either. To be honest, when I first wrote that line, I wasn't thinking much of it, but then I read it back and went "Hmm... That's kind of... More suggestive than I meant it to be, but it works." So yes, the double meaning is more or less intentional. However, Az'Lean himself is really only thinking about the kingdom, he's too repressed to notice the way it comes across. He's just trying to sound threatening, which does play into his dominant aura, as you said. Maybe he'll figure it all out eventually ;)
Your English is absolutely fine by the way! No need to worry about that :)