Swandives

n.

A forward dive performed with the legs straight together, the back arched, and the arms stretched out from the sides and then brought together over the head as the diver enters the water.

Just in case you were after a definition, this one’s from Dictionary.com.

According to Wikipedia, a swan dive is also the most popular form of the diving headbutt manoeuvre in professional wrestling.

I think both definitions are fitting, depending on my mood. I’d like to be graceful and elegant, but too often revert to showy violence