15
what harry potter does on the regular to ron and hermione, literally almost everyday
whooaa did you see that cockblock the other day?

yeah i can't believe harry put his arm around hermione like that, ron was totally about to make a move
by ashsal June 24, 2011
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16
(n.) one who prevents another from getting "play", "poontang", etc.
(v.) any action that impedes or stalls another's "game", "mack", or "pimp manuver"
(n.) I was dancing with this girl, when this cock-block stepped in between us and started grinding with her.
(v.) I had finally convinced Susan to go to my friend's keg party with me, when my Dad cock-blocked me by taking away my car keys.
by MCKREWGA September 13, 2003
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17
If your a pedophile he is the definition of a cock block.
by jayleeb August 10, 2008
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18
A device used by fat girls to prevent their hot friends from going home with you.
John was about to go home with some hot blonde until her fat friend cockblocked him and went home with her instead to eat candy bars and watch the Tyra Banks show
by TheFrost February 23, 2007
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19
When a friend or person prevents one from hooking up with a potentional mate. Usually done on purpose by a friend or person that will go to extreem lengths to prevent one from hooking up or getting some. Can be done by accedent, but usually not likely. Also know as cock blockers or cock blocking, these indeviduals of interception usually have the hater mentallity of, "Fuck that guy/girl!!, If I can't get it, they can't eather!!, or the famous I'm just going to fuck this up for this person because I'm a HATER!!! Also known as purpratrating hating, ass deflecting or scary ass. These Interceptive, bypassing, mercenaries must be stopped!!!
"I was macking on a girl and my so called friend was butting in on the conversation, then pointing out my flaws, then trying to bring up my old relationships, then bug-a-booed the girl all around, then tried to tell her to call him in a different language(they both spoke the same second language), Then followed us around the whole night(even falling asleep by us then wakeing up at the first sign of movement, jumping between us, making me drop her off first and we were entering his(the cock blocker's) drive way, not allowing me or her to exchange phone numbers, this all acts of true COCK BLOCKING, COCK BLOCK, COCK BLOCKED, COCK BLOCKER." true-Mon, July,14,03
by The chun du July 14, 2003
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20
to keep a brother from getting laid with your pressence
johns little brother cock blocked him by not leaving the room.
by M&M October 23, 2003
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21
Someone who uses different strategies to keep others from having sex
1. Courtney announces to others that a guy has herpes so even though eveyone gets a good laugh, no one will touch him.
2. Trashley: "Courtney is a natural-born cock-block because she falls asleep in the room everytime I want to bring my boyfriend in there!"
by maddox08 September 27, 2005
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