Originally Posted by: PonyOne
With your friend's parents, maybe it's time to just lay it out black and white and just tell em what's up... you can also tell them what you're gonig through right now in terms of stress and that you just plain can't deal with more stress; they should understand if they're friends.

I agree. Your assignment is more important than saving his parents the inconvenience of dropping their son off in the morning. Do as PonyOne suggests, and if they don't like it, there's nothing much you can do about it.