So, I was struck on my second read (yes I started it right after the first one) with this particular conversation in Parseltongue: "You ssaid no time," came the snake's hiss, "but plan iss for you to rule country, obvioussly, even your young noble friend hass undersstood that by now, assk him on return if you wissh. Will ssay no more now, iss time to fly, not sspeak." So actually one can tell lies in Parseltongue?