Auto cock-block

The act of cock-blocking oneself by saying something extremely stupid. When you don't need a cock-blocker - when you can do it all by yourself.

Danny was being hit on by some hot chicks at the bar but he said something so stupid he actually auto cock-blocked himself.

Auto cock-block by Oscar12345 October 10, 2008

Auto-cock-blocker 

1. A straight female that has something about her that automatically prevents her from getting sex.

2. A straight female that always says or does something stupid that prevents her from getting sex.

1. Stacy has a mustache thicker than her boyfriend's. She's not gonna get laid; that's a turnoff. She's an auto-cock-blocker.

OR

2. Tracy is so pretty, but she's weird! She says random stuff like "my hamster talks to me at night." When boys hear that, they freak out. She's an auto-cock-blocker.

Auto-cock-blocker by PrincessR December 8, 2009

Auto-Cockblock Asphyxiation

The act of doing something so incredibly stupid while trying to get with a girl that it ruins your chances with said female.
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Auto-Cockblock Asphyxiation:
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At the party, Mark was hooking up with this girl. When he tried to ask her to come back to his place, he couldn't remember her name. She got so pissed, she stormed off. He totally auto-cockblock asphyxiated himself!
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Everything was going great with Lauren untill we got in the cab. We were making out in the back for a few minutes when all of the sudden I got the spins real bad from all of those tequila shots. I tried to hold it back, but I threw up all over her. Now she won't answer any of my calls or texts. I completely auto-cockblock asphyxiated myself!

Auto-Cockblock Asphyxiation by bar terminology October 18, 2011

Autocockblock 

When you say something to the girl you are hitting on that makes you loose any chance of having sex with her.

Namyr can't get a girl because he's always doing autocockblocks.

Autocockblock by Francisco Garcia Gonzalez October 26, 2007