Top definition
A foul act in which someone interferes with another’s attempt to play Halo.

Girls have the uncanny ability to haloblock just by their tacit demand for one's complete and undivided attention.
"Why did Joe stop playing Halo?"
"He got haloblocked by his girlfriend. Again."
"Yeah, he's whipped."
by Johnny Studio January 30, 2009
Get the mug
Get a haloblock mug for your coworker Jerry.