Two ingredients are needed:
If not then a water based lube from your local pharmacy is also good.
Being relaxed is an important part of creating G-spot orgasms and female ejaculation.
I image of a safe harbor, bubbled up from my subconscious when I was writing this.
Women with incomplete spinal injuries are generally able to produce vaginal lubrication and enjoy wheelchair sex.
However, once you get over this strange sensation and allow it to simply happen, you will most likely enjoy a G-spot orgasm and perhaps even female ejaculation.
I did not think any one else did it.