Inside the fillies womb the man squirms back and forth trying to crawl into her. His shoulders slowly force her cervix wider until the tight ring of muscle slides around them. The fillies eagerness finally kicks her muscles into action. Rippling in reverse contractions the man is pulled from the mares body. With a wet slurp His legs and feet exit her vulva.  With all of his weight supported by the filly her belly drops lower allowing her to stretch just a bit more. His waist and legs dangle from the rear of the filly kicking into the open air. Without the aid of the other mares strong muscles the filly  pulls him into her at an agonizingly slow pace.<br/><br/>(Got any better ideas then having the filly lie her front legs down and stick her ass into the air and let gravity help her?)