Horse One In

Inserting ones rather large manhood into a women's vagina.

Oliver; "Mate, I really fancy that bird"
Chun; "Why don't you just horse one in?"

by charlialexander January 27, 2009

You can’t put one horse in two barns

You can’t have more than one significant other.

-Caleb Smith 2019

“Devin, I know you like both of those girls. I hate to tell you, but you can’t put one horse in two barns!”

by CowboyCaleb May 11, 2019