It is the dried sliver on cum that is left on the inside of the urethra after not washing after sex. This may result in pain or may just be bothersome. This can refer to a person who is being annoying/bothersome.
Billy: Dude I made out with like twelve different chicks on vacation man, and I boned a chick at a water park!
Ron: Sure you did....
Becka: Your being a real douche right now...
Ron: Yeah stop being such a cock knot.
Ron: Sure you did....
Becka: Your being a real douche right now...
Ron: Yeah stop being such a cock knot.
by TooDaFace July 26, 2010

by Baz February 21, 2004

by Lance Hardcastle October 20, 2003

by edclectic March 29, 2008

A word used to describe a person that has issues such as, excessive talking, nose picking, and the often factor of taking a dump when in class without leaving your chair. This is used by teachers and most teachers are knot heads.
Person 1: *sees tall person*
Person 2: "he's a total knot head"
Person 3: "yes he's definitely an Eric!"
Person 2: "he's a total knot head"
Person 3: "yes he's definitely an Eric!"
by Awesome99 November 25, 2014

by Anonymous May 1, 2003
