Top definition
This is the art of being cock blocked by a guy when making advances on another guy. Usually they guys are two close friends and the one blocking you wants you for himself.
If I was making advances on this guy I was attracted to and a mutual friend came in and was J Blocking me.
by Mistress of Darkness March 05, 2010
Mug icon

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