The act of a woman wearing a strapon dildo and having anal intercourse with a man as he lays on his back with his legs in the air, all while she strokes his penis in such a fashion that the ejaculate is aimed at the man's face.
When my girlfriend walked in with that giant dildo hanging from her crotch, I knew I was about to get a blakenbaker.
I really love blakenbakers, just not the taste of my own semen.
Some slut wanted to give me a blakenbaker, so I punched her in the head.
Blakenbakers are quite unpleasant.