A male orgasm almost always results in ejaculation. The exceptions are too technical to worry about. The orgasm is the tensing and releasing of muscles in both men and women. Ejaculation is spewing semen - in men.

Very few women ever ejaculate. So, there is no physical proof of our orgasms.

I've always thought of an orgasm as a mental state of ecstacy brought on by sexual intercourse where proof of it isn't necessary because one knows just how good it feels.

Ejaculation,as Brandye has stated,is simply just spewing semen.

Partly true, money. There are physical manifestation as well and the relaxation of myotonia feels very good. In the male brain, endorphins are released and this gives a feeling of bliss.