Jerk Pump

The act of jerking and fist pumping at the same time, usually in response to the occurrence of something awesome happening.

Jerking- Style of dance

Fist Pump- Think Jersey Shore and Guido dancing

When something is so exciting, so completely enthralling that you are nearly dying of the anticipation. In fact, the excitement is so great that it is equivalent to the feeling of jerking off. As such, you are completely pumped by the idea of doing something on par with masturbating.