kvetchitude

noun. Look deep into a complainer's cold walnut of a heart, and this ye shall find.

Real citation: "It's also a good day to brush up on kvetchitude. For, y'see, summer is coming and one of my favorite activities is to get together with a friend or two, sip some homemade lemonade and/or drink some beer and just sit on the porch and bitch about stuff."
(Tuning Spork, April 23, 2005, http://blatherreview.mu.nu/archives/cat_i_got_nothin.html#077601)

Made-up citation: "When my kvetchitude reaches Costanza-like proportions, it's time to make a refreshing grain alcohol smoothie and relax."