I have never heard the term, but it kind of makes me think of a consipated weener. It's not a football term. What the Sam Hill? Son of a buck! (Sorry, I just had to use those terms because they always make me laugh.) I asked a couple of guys in the office and they've never heard it. I may have to Google it, now you have me so curious!

ETA: From the anti-Webster's, the Urban Dictionary:

http://www.urbandictionary.com/define.php?term=cock+block

I have never heard the term, but it kind of makes me think of a consipated weener. It's not a football term. What the Sam Hill? Son of a buck! (Sorry, I just had to use those terms because they always make me laugh.) I asked a couple of guys in the office and they've never heard it. I may have to Google it, now you have me so curious!

 

ETA: From the anti-Webster's, the Urban Dictionary:

 

http://www.urbandictionary.com/define.php?term=cock+block

Yeah, I knew that definition, I was just wondering why they didn't bleep him for it. I thought there might be a less graphic definition. That's funny.