1 definition by NothinMuch2BSaid

Top Definition
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?
Cock blocker- So, jon, told her about your AIDS yet? i dont think she'll like that!
Allison- oh wow! cya!
by NothinMuch2BSaid June 30, 2009

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug