Top definition
The act of ejaculating both sperm and blood at the same time, in one load.
Guy 1 - Man, last night i was riding this chick hard, and then came on her. My sperm was all bloody!

Guy 2 - Man you blusumf'd on her! You should get that checked out.
by xTheRoseRedx April 01, 2011
Get the mug
Get a Blusumf mug for your brother-in-law José.