Love Satisfies
The two links below are discussion forums about male multiple orgasms:

You might enjoy the aneros sex toy; many men recommend it for male multiple orgasms. This toy puts you in touch with your prostate gland. During male climax (orgasm), the muscular glands of the prostate flutter in orgasmic contractions which help to propel the prostate fluid, in addition to sperm that was produced in the testicles, into the urethra. The semen then leaves the body out through the tip of the penis during ejaculation. The fluttering, orgasmic spasms of the prostate gland feel the same whether it's a wet orgasm or a dry orgasm. Have you ever stopped to notice your prostate gland fluttering in rhythmic, orgasmic contractions? These orgasmic contractions are felt deep inside. 

non-ejaculatory orgasms
The best book for learning to have nonejaculatory orgasms

Of course, I urge you to read my book.  Illustrated books are delightful to read. Love Satisfies has special drawings on almost every page. Love Satisfies' illustrations help you to become a multi-orgasmic man.

Peace and love, Keepitup Johnson

PS. Feel free to contact me by email.