Actually its the violent neck grabbing that stimulate the Jill to drop her eggs and thus takes her out of season. Something similar is a cats penis with the barb on it. That does the same job.
if it were that simple then every one would just '' violently'' grab there jills round the neck.. job done
That would be handy kay ,?
Friction on a very sensitive are ie a vulva the size of a grape, mate of myne had a frustrated jill last season and she would hold and mount one or two jills she took a fancy to and actually brought them out of season, saw it myself a handy jill to have abou