unfork

Etymology
en, alluding to the forked position of the rider's legs.

Verb

 * 1)  To dismount from (a ridden animal).
 * 2) * 1947, Alfred Bertram Guthrie (Jr.), The Big Sky (page 322)
 * unfork my horse and get my ass unsprung and just lie around and eat and sleep and let the sun shine on me.