When you go out on a date with a girl, only to find out that she doesn't think it's a date (usually revealed by a third party). You then pretend to be excited for her while furiously ad-libbing an exit strategy.
Guy: You sure are nice.
Girl: So are you. Let's get coffee.
Guy: Great.
...
Girl: This coffee is delicious.
Guy: I'm having fun.
Someone: What are you doing for break?
Girl: Oh, I'm just going to Hawaii with my boyfriend to celebrate our one-month anniversary.
Guy: Guh! Wow...congratulations.
Girl: I'll say!
Guy: Welp, looks like it's about time for me to be hittin the ol Dusty Trail...
Girl: Bye!
...
Guy: COCKNOCKLED!
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 annoyingpeople. 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 genitalsreally)