you dont have to jack before.Just know what your doing.Make her come so many times before entercourse that she wont care how long you go.The faster the better a?She will be so sensitive that shell come just as fast or faster then you.Let her on top to,when we are in control and on edge we cant help but to try to kill the cat and then a second later were done.Its all about the ladie.Make good with her and you dont have to worry about a thing.