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2.
The time after which it is socially acceptable to depart from a boring event or social obligation like a wedding reception, fundraiser, or birthday party.
I think it's about the ditching hour. The bouquet has been tossed, The bar is out of decent scotch, and Aunt Millie is falling down on the dance floor.
by you got it made August 15, 2011
 
1.
the time of night when all the people you are texting or IMing suddenly stop replying to your messages
person 1- kim and angelika stoped texting me last night.

person 3- wow man, that kinda sucks, that's the ditching hour for ya

person 1-yeah, I guess

(p.s. Person 2 died)
by 13lue Dog February 28, 2011