cobra head 

A coiled turd with the last part being straight and sticking out of the water. Extremely difficult to do, but worth practicing.

Dude, I just shut the lid on a cobra head in there, better use the other shiter.

cobra head by shlitzy December 1, 2007

Cobraheading 

Being irate. When one is irate they may sway their head to and fro as would a cobra.

My boss actually yelled at me this morning, I was cobraheading something fierce all day.

Cobraheading by Qunte November 1, 2009