Bummercloud 

A downer, unfavorable situation, a nuisance: Something that would harsh one's mellow.

That Theresa is a real bummercloud, man. Ever since I got her pregnant she has has been raining the bummer

Bummercloud by Dr_tesseract February 25, 2010

Bummercloud 

-Verb- as in to bummercloud, to hurt someone deeply and joke about.

I sure did bummercloud that Melissa girl, hah!

Bummercloud by HRH114 March 18, 2010