Grumps are also fun to annoy. The stimulus-response relationship is at times almost enchanting. Harassing a grump without sustaining personal injury is good sport. A number of the sources nominating valley grumps did so with the caveat that their grump had many redeeming characteristics. Indeed, many grumps seem to have a kinder, gentler flip side.
Grumps are often irascible, curmudgeonly and much-loved.
There's also the fact that after a particularly bad episode in a public place, where a grump has, say, imitated a terrier seizing upon a pant leg, he or she will attempt to provide compensation to the victims. Yet, in my experience a bitch is a very different thing than a grump. Grumps are undiscriminating. As one grump pointed out to me, we can't all be doormats. Someone has to snap, do the facial twist and shout, or the world would be like a talk show on the Christian channel.