Top definition
The act of ejaculating on a woman's back while sleeping, and in the morning she smells and eats it, usually the semen have a sour taste.
"She wouldn't give me anal last night, so I left her a little Sour Horse Milk"
by Titty twister69 January 04, 2016
Get the mug
Get a Sour horse milk mug for your father Jerry.