I didn't mean to plagiarize -- those words are just so deeply embedded in my mind from listening to the radio shows and records, reading the books and playing the infocom game so many times, and they so perfectly described the situation. So I assumed everyone would recognize Douglas Adam's really really nice use of words, like a Shakespearian quote. ;)
"It's unpleasantly like being drunk."
"What's so unpleasant about being drunk?"
"You ask a glass of water."
If you haven't already listened to the 1978 radio show millions of times, it's on youtube!