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1.
Someone who lives life on the forefront of high-fashion, exploring the nature of man (and man's body) with the appreciation of a woman.
I think that's the bassist's boyfriend, I've heard he's a bit modern.
by Johnny Luke March 07, 2007
 
2.
Descriptive of the increasingly large number of people who do not conform to the traditional values of man + woman = ok. Modern People tend towards being attracted to their own sex, or even both, in which case they are considered to be Thoroughly Modern People.

Symptoms of Modernity include overly tight/baggy clothes (boys/girls respectively), visible underwear, and publically being amorous with a member of the same sex.

Term was initially invented in the Birmingham area of the UK as a means of talking about suspected Modern People in close proximity without the subjects being aware of what was being discussed. Its growing popularity is rendering it useless in this regard.

See also: Modern People, Special Friends, or the short forms MP and SF
person A: modern alert!
person B: where?
person A: over yonder *points*
person B: haha modern as fuck mate
by Ev0 November 27, 2005
 
3.
Modern, in this respect, suggests a person, commonly a female, and more commonly of Sino-Asian lineage, who accepts, or at least doesn't readily condemn, Western ideals as they pertain to sociability, relationships, sex, and so on.
Often spoken in contrast to the more closed-minded, Traditional type.
Suzie is a modern Chinese girl. She's discovered the pleasures of sensuality, is open-minded about sex BEFORE love, and enjoys casual dating.
by Tom Laoshi July 27, 2005
 
4.
Describes one who is open to participating in free, positive, erotic expression with multiple partners of either sex; a festive environment where open sexuality is enjoyed and encouraged; orgiastic behaviour. Usually refers to the openly sexual enjoyments of a hip, bohemian or patrician class of people.
The Bay Area and L.A. have a large Modern community who enjoy frolicking wildly at Modern parties. "There's a hot Modern party happening on Saturday night." "I'd love to play with you, but I'm not feeling very Modern right now."
by Myste November 07, 2006