A reacharound where the giver's hand is positioned thumb down.
While being fucked in the ass, I'd rather my partner was Washing the Horse as opposed to a normal reacharound.
by Miles Stauffer November 07, 2003
While getting your partner from behind, pull out, and urinate all over their back - especially in the hair while tugging on it.
Jen thought I was going to pull out and shoot, but instead she caught me washing the horse.
by Theodore Baagz, MD April 17, 2014