Some one who stops you from getting a number. the Cock Blocker does this by coming over to you and the other person and completely ruin the conversation.
Jon- So can i get your number?
Allsion-Su-
Cock blocker- So, jon, told her about your AIDS yet? i dont think she'll like that!
Allison- oh wow! cya!
Jon-dick...
Allsion-Su-
Cock blocker- So, jon, told her about your AIDS yet? i dont think she'll like that!
Allison- oh wow! cya!
Jon-dick...
by NothinMuch2BSaid June 30, 2009
by monet July 15, 2004
Someone who tries to interrupt you while you and someone are engaging in some sort of sexual activity, usually with something totally meaningless or pointless.
Ooooh, aaaah, hmmmm, unngh (me and my girl getting frisky, hehheh)
*knock knock*
Flatmate:"Wanna cuppa"?
Me:"Fuck off and leave me alone you cock blocker".
*knock knock*
Flatmate:"Wanna cuppa"?
Me:"Fuck off and leave me alone you cock blocker".
by Safecracker G October 15, 2004
by jay c June 25, 2004
by Stiffler November 08, 2004
by Anonymous May 05, 2003
by Clinton o October 19, 2008