The gruntled thread reminded me of the word underwhelmed which is used as an ironic statement meaning that one is thoroughly unimpressed with something. I find this a bit of a shame since I find the "true" meaning of underwhelmed to be much more interesting.

The original metaphor is based on the meaning of whelm which involved being covered with water. Being overwhelmed meant being washed away with a deluge. Working on this metaphor, to be underwhelmed should mean to have one's base washed out from under one.