This is a job... for COSMO:
http://www.cosmopolitan.com/sex-love/advice/a6896/cervical-orgasm-guide/
Anything beyond that is gonna be, from your male perspective, like putting your balls in a mincer and slowly turning the handle while listening to a deaf guy whistle.
As for the horror story, fuck it, just shove it right through there and make a point of noting the blood and agony and pissing self with excruciating pain. It's all good.
...What? I'm JayDee, damn it...