The act of fucking a girl doggy style then right before ejaculating the man pulls out and spits on the girls back as he ejaculates into his hand. The girl then thinks that he is finished and turns her head around. As this happens the man takes his ejaculation in his hand and puts it on her head as he says, "Send out your Warg riders". Just as Saruman did in Lord of the Rings.
"I took my cum and gave that bitch the White Hand of Saruman last night."