gerner, a word used to describe the jaw movements when a person is under the influence of ectacy. Or another name for exctacy

A swimmer

the rubbing or grinding of teeth during the intoxication of extasy

the rubbing or grinding of teeth during toxication of extasy

someone who is a major tool/loser

Is the definition of an all-round mad cunt that burns like s Bunsen.

To connect the knee with an agressors leg at high velocity.

The gern is effective due to its ability to incapacitate the target leg. Therefore preventing any chance of the target retaliating with a chase.

To increase the effectiveness of the gern, it can be combined with a leap. There is a positive correlation between length of run-up and the gerns effectiveness.

When using the gern, accuracy is paramount. A miss can lead to a swift retaliation, usually a John in the head.

Proper gern technique is hard to master.