c-blocker 

definition: a c-blocker is a guy that will do anything in his power to make sure you don't take home a girl.
At a house party; When you tell the girl "its kinda cold outside wanna go up to my room", he will sping into action and give her his jacket.
At a bar; you will be in the zone with a girl and she's clearly into you, all you have to say is "wanna head back my place" and it would be a done deal, thats when a c-blocker goes in for the kill, he will walk up to the bar between you and her and say "hey can i buy you a drink",
c-blockers can even be your best friend; you can tell your buddies how much you like this girl and they will tell you to go for her, but every time she is around your c-blocker friend will hit on her or make sure he takes the seat next to her where ever you go together, often he will get ahold of her phone number and invite her places without you. when you ask him what the deal is and why is he all over her all the time? he will say "what, she's my friend too and i don't even like her in that way, your acting paranoid".
often a c-blocker will never succeed in landing the girl, his job is to make it impossible for you to get her.
mike, brody, and james are the most common names of c-blockers so watch out you could be next!!!

friend 1: What happend with you and the girl last night at the party?
friend 2: every thing was going great, i was about to take her back to my place when this guy came up to us and asked me if i tested negative at the clinic.
friend 1: when did you go to the clinic?
friend 2: i didnt that guy was just a c-blocker making up stuff so she wouldn't go home with me. after that she thought i had some S.T.D. and would not even talk to me

c-blocker by Travis Beddingfield May 4, 2006

C.O.D. Blocker

Noun, pronounced "Cod" blocker

Any person or thing that keeps you or someone else from playing countless hours of Call of Duty online.

Example:

T: Dude, you said you were going to get online and play some Call of Duty with me! These insurgents are going to kill themselves. What's the deal?

K: Sorry dude, I was, really. It's just my girl-friend, she's all "you need to spend some time with me." and crap. I just can't do it right now.

T: What?! She's being like that? Dude she's a total C.O.D. blocker!

C.O.D. Blocker by Almost Dangerous February 8, 2010

c blocked 

Shortening of the term Cock Block.

Dude, I was hitting on this chick and he c blocked me by showing off his Mercedes. Now she won't talk to me.

c blocked by Gavin So Complicated August 17, 2006

c-blocked 

cock blocked...not getting any pussy when you really need it because of unforseen forces beyond your control

I am getting c-blocked from all angles...either my girlfriend gets a phone call or someone comes to her house right when we are ready or I'm on line chatting with some hot babe and my computer crashes.

c-blocked by fitzwilli June 11, 2006

cblockerradio 

n.

1. Long, and tall.
2. A CB radio, that really isn't.
3. Key proponent of randomness and ls-ism.

Figuratively: A blocker of C.
Adjective: Expressingly amiable bitterness.

I once bought a cblockerradio, but it was too tall and random.

cblockerradio by Xaleth August 19, 2003

cblocker 

Cblocker can be short for cockblocker, cock-blocker, or cock blocker. A cockblocker is someone who prevents or hinders two people from getting together or the relationship of two people, namely the relationship between two people that like each other.

"He's being such a cblocker, he keeps talking to her to keep me from asking her out!"

cblocker by lajaua dinijilk February 4, 2010