1. A boyfriend of the girl your getting with
2. someone interupting you, or embarrasing you
2. As i was about to unzip my pants and feed her my Vainey tree stick, this total Scott had to poop on me. cock blocked again for fucks sake.
2. (Noun) a male who interferes with another male's attempt to freak the woman whom the former either wishes to protect as a friend, or is already pursuing himself;
3. (Verb) to cockblock: basically, to interfere, by way of one's mere presence, with the attempt of one person to freak another
2. I made my move toward that hottie Jennifer with the thought of grinding with her. That cockblocker Alex cut in and got it first.
3. Alex cockblocks all the time