This description is somewhat misleading. The stimulation occurs not because of an actual spot inside the rectum, but because pressure is being applied to the prostate. The same procedure is used to check for prostate cancer in men, but done correctly can also cause an aroused man to ejaculate forcefully. For best results, combine this stimulation with direct oral, anal, or vaginal stimulation of the penis, rather relying on applying pressure to the prostate alone. With some practice, this is easily achievable by two people, but this can often be a good excuse to get a third party to "lend a hand" as it were.

It's important to note that this method of prostate stimulation takes getting used to, and can result in soreness the first few times.