1 definition by hahhahh hallie.

cockblock

A person who blocks the action of a guy trying to make a move on a girl.

**sitting on the couch**

Dave: Hey hallie, your very pretty.
Hallie: why thank you.
*dave leans in to kiss her*
*sarah walks in & sits in the middle of them*
Sarah: hey guys! nice night? yes?
Hallie: WHY ARE YOU COCKBLOCKING?

by hahhahh hallie. April 6, 2009