Person that goes from one guy/girl to another in a short amount of time. Does NOT necessarily mean going out with them; Girl or Boy that is all over someone after someone after someone for attention.
That girl has been around the block in only one month, shes a cockhopper.
Derives from the Silent Bob character and popularised by the rusty joystick forums troll called neomonk. Has a growing popularity to mean someone who trolls forums for the purpose of upsetting and annoying people. Also prone to pseudo intellectual comments and a self obsession with own opinions
Neomonk stop behaving like such a cocknocker - its not big, its not hard (rather like your genitals really)