No. Because breach your skin on the thumbs with the needles of the oscilloscope and 9v battery will easily stop your heart.

The current that passes trough your body is determined by the properties of the whole circuit. And it is ultimately the current that kills you.

Actually it's the energy - think of a static shock, which is similarly in the kV range (or higher) and thus the instantaneous current and power is also very high; but it doesn't last long enough to cause any real damage (i.e. the amount of energy imparted is tiny.)