"Painful to watch" is the absolute perfect way to describe how I feel about this episode. At least I laughed once in the first episode, so it's obvious from what you're read so far that I didn't laugh once during this episode.
I can't really tell WHEN it was trying to be funny, that's how bad it is.
But then, just when you thought it couldn't get worse, they beat us over the head with the incredibly cliched 'lesson' about how parents should talk to their kids about sex. WOAH! Haven't heard that before!
However, I guess I must thank this episode for two reasons. Firstly, it showed me that it is possible to make an episode worse than the first, and secondly because it was so bad it made me stop watching the series completely.
My advice is simple: avoid at all costs.