If a diastolic pressure is highly developed than the systolic pressure, what does it parsimonious?

To be honest, I am not really sure if it is possible that the diastolic pressure could be higher than the systolic, but I be curious. It's impossible to have a highly developed diastolic pressure than systolic, as diastolic is resting pressure on the arteries when the heart is in its relaxed state; while systole is the pressure exerted within the arteries when the heart is in its fully contracted state, as a result that makes it impossible.
Think of a mitt pump, and you are pumping water into a bucket from a all right, when you squeeze the pump, the increased pressure in the pump forces the river upwards into the bucket as the valve below it is closed. It would be impossible to squeeze the pump and hose enter it rather than exit it.
It is ususally unfeasible to have diastolic pressure to be high than systolic.Something wrong with equipment or the brainless personage who is listening for the BP.