When you are doing a girl doggy-style and she shits so your penis is all covered in shit, then you put her down on a table and put the shit and cum all together on her tits and smear it all around. Then you perform the Rainbow Kiss. Better effect without the woman's consent.
Chris: When i had sex with Hannah she shat all over my penis and then she was on her period so I did the Texas Horseride
Gaben: Damn broyou need to chill
1. A female, typically in her mid 20's, that does not assume responsibility for her actions. Instead, the universe is to blame. She typically has an irrational fanaticism for equine husbandry, even though her finances, and the finances of her support system, will not allow it to be realized. Generally out of touch with reality and the concept of stability.