diddly shit
A generic, and very vague way to answer a question with a great lack of enthusiasm. Commonly used after one has completed a task and is devastatingly bored, hence currently doing absolutely nothing or diddly shit.
Slim Johnson: "Hey Dick what have you been up to lately?"
Richard Head: "Well Slim... as of lately... diddly shit."
Richard Head: "Well Slim... as of lately... diddly shit."