Remember the hotter wire has faster moving electrons and more collisions. Collisions in electrical flow slow down the progress of moving electrons and the fields surrounding them. Water on your skin creates a better conductor, thus lowering the resistance of your body. Perspiration is salt water which is a very good conductor of electricity. Therefore, the resistance decreases.
Wet surfaces provide a path for electric current to follow decreasing resistance.
Therefore, more current will flow. High voltage by itself does not produce electric shock. Distinguish between dc and ac. DC or direct current is flow in one direction. AC or alternating current is flow that goes back and forth, such as 60 times a second in house voltage.