A man who is not quite old enough to be a manther but still likes to date/mate with younger women.

Dating a manx wasn't so bad, Gina reflected. After all, the sex was over quickly and he always picked up the tab when they went out on the weekend.
by BettyBadass November 29, 2007
a very mischievous/cheeky guy
Josh has three girlfriends, he is such a manx!
by Beybehs Protector West December 28, 2009
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