I can cum anally from prostate stimulation and must say the orgasms are much more fulfilling than a regular penis centered orgasm. I achieve them most easily being fucked in my bum by my sex machine or buy stimulation of my prostate with my Njoy wand.
The building of the orgasm is feel deep in my ass and groin. At peak it spreads throughout the body, creating an intense wave of pleasure. Sometimes I’ll feel my anus and rectum pulse a bit. Other times I’ll feel fluid buildup and involuntarily squirt prostate fluid from my penis (I best relate this to a woman squirting).
The best part is I can experience several orgasms in a session vs a one and done as when ejaculating. It feels incredible and can put me into a zoned out state where all I want is to be fucked and experience more pleasure.