What is the best term to equally describe a male as a slut?

The term 'slut' used either affectionately or dregradingly toward a female seems to fit well but what do we call a male who fucks anything or everything around.

We see many words that can offend the female feelings in society such as slut, whore, trash and the like but really, do the opposite words offend men like, asshole, giggilo, prick, bastard or pervert and seriously, men are rarely offended by these choices.

I think calling either sex a 'cunt' is the most offensive tag but we need to find or invent another term for a man who acts like a 'slut' in the real terms, something that can either be taken as offensive and degrading or the opposite, as an endearmeant to sex play.

The dictionary describes a 'slut' as " a promiscurous woman" but could I find a word describing a 'promiscuous man'? Nope.  A little sexist right?

Again I find that the word 'nymphomaniac' only describes a female with an abnormal and intense sexual desire. There is no similar word for a male of the same nature. (more sexism, lol and I am sure most man have the same 'abnormal intense desire')

Lets find an answer.

The description is simple, one word that describes;

A promiscuous man of little moral value, nymphomaniac in nature. i.e, one masculine word for a nymphomaniac male slut.

Lets fix this gross error and use it often so the dictionarys of the world pick up the new word.

Suggestions are welcome but it has to sound offensive to males. So come on girls, tell this ignorant male what you think. Lets make the status-quo fair.:)

Thanks anyone who contributes