|don't go away mad; just go away
||do not be angry, but leave; you are not welcome here
||He said to the heckler, "Don't go away mad; just go away."
|don't go there
||(See don't want to go there)
|don't hand me that
||(See don't give me that)
|don't have a cow
||don't become so excited or angry, chill out)
||"Do you want a punch in the nose?" "Now, Ralph, don't have a cow."
|don't hold your breath
||it is not going to happen soon, be prepared to wait
||The City will repair the street but don't hold your breath.
|don't knock it
||don't be negative, it could be worse
||"I only got a C for my report." "Don't knock it. I got a D."
|don't know him from Adam
||do not know who he is, have never met him
||The man says he knows me, but I don't know him from Adam.
|don't know the first thing about it
||do not know anything about it
||I can't fix a transmission. I don't know the first thing about it.
|don't know the half of it
||do not know all the facts, have not heard all of it
||Yes, they got divorced, but you don't know the half of it.
|don't know whether you're coming or going
||you are confused, you do not understand, go in circles
||If you believe the cult leaders, you won't know whether you're coming or going.