I saw the post about the guy that cut a hole in a rubber ball that he pulled his dick thru then inserted in his hole so it would stay there.
How bout a small inflatable ring that you could pull your dick thru say just behind the head. Inflate to where it is not coming off, then work your dick into your hole and past the ring. sounds a little painful i know if you have a shorter dick, but hey...whats a little pain??
shouldnt bother bloodflow or even spermflow if its inflatable/soft.
