|don't know which end is up
||are confused, are mixed up
||After talking to four bureaucrats, I didn't know which end was up.
|don't know which side your bread is buttered on
||do not know what is really important, have not learned much about life
||If you refuse the assistance, you don't know which side your bread is buttered on.
|don't know your ass from a hole in the ground [B]
||you are ignorant, you are mistaken, mixed up
||He said one member of the cult was so confused he didn't know his ass from a hole in the ground.
|don't look a gift horse in the mouth
||do not be critical of a gift; be grateful for a gift
||Don't evaluate a gift. Don't look a gift horse in the mouth.
|don't make a mountain out of a molehill
||do not cause a big fuss about a small problem
||So I scratched the car. Don't make a mountain out of a molehill.
|don't make me laugh
||do not be ridiculous, don't give me that line
||When I said I wrote the novel, he said, "Don't make me laugh."
|don't make no nevermind
||(See it don't make no nevermind)
|don't make waves
||do not do anything that will cause problems
||Our company has changed a lot. Don't make any more waves.
|don't mention it
||it was no trouble, no problem
||"Thanks for the ride," I said. "Don't mention it," he replied.
|don't push your luck
||do not try to get too much, do not ask for more
||If Mom says maybe, don't push your luck. Be patient.