An orgasm so extraordinary that you experience a blackout or near blackout. Usually an orgasm from a woman you're head over heels for. Also the result of an older man sleeping with a much younger woman that is perhaps a little too much to handle for the old man.
Male usage: Cindy makes me blackout-cum!
Female usage: I can't wait to make you blackout cum all over me!
Female usage: I can't wait to make you blackout cum all over me!
by snickered June 24, 2016
Get the Blackout-cummug.