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60.
Describing something that has the romantic and/or sexual attraction to both genders. Although it was once a word used almost solely to describe someone who ACTUALLY is bisexual, it has come to also mean attention-seeking, scene kid.

Please, unless you are actually bisexual, don't come out as one. Typically, people who aren't and do, will say that they are straight again soon after. This has already lead to the much of the LGBT community to hate on bisexuals and others outside of it to think being LGBT is a choice.

Being LGBT isn't a choice, so stop acting like it.
1990's:

Person 1: Zach is dating Samantha.
Person 2: Wait, I though he dated Stan. Isn't he gay?
Person 1: Nope he's bisexual.

2012:
Scene kid 1: yah im totaly bisexual now c:
Scene kid 2: o rly? so u wanna go out sometime?
Scene kid 1: nope i only date boys. dating girls is gross XD
Actual bisexual: Shut the fuck up.
by VoodooPenguinPH February 18, 2013
 
1.
The ability to reach down someone's pants and be satisfied with whatever you find.
Jane is bisexual
John is heteroexual
Jane had a bisexual affair with John and Jill
by Homicide April 06, 2004
 
2.
A person capable of having physical, romantic, and sexual attraction attractions towards both sexes. What bisexual is NOT: Sex fiends looking to hump everything in sight. Just a phase of confusion. A fad; though for some females it is considered "sexy" to be bisexual. A person who engages in orgies. (Though some do, I'm sure.)
I'm bisexual. :)
by Dark Child July 17, 2003
 
3.
To be bisexual is to be attracted to a person regardless or gender or sex. It does not mean that you cannot make up your mind, it does not mean you are sex-crazed, and it does not mean that you will by default participate in orgies every night.
Of course, there is probably someone reading this that DOES participate in orgies every night, but they would be in the minority.
by Alyson April 21, 2003
 
4.
The often overlooked B in LGBT. A person capable or romantic and sexual attraction towards a partner of either gender. A person twice as likely to be turned down for a date on Saturday night. Someone who has to prove to the heteros that he is not gay, and prove to the homos that he is not straight. A trait hetero men find extremely attractive in women and seem to find frightening in men.
Some people are bisexual.
by Bisexual yankee geek June 19, 2003
 
5.
Noun: A person who is sexually attracted to both men and women. This does not necessarily imply that the person is EQUALLY attracted to both sexes.

Adj: Used to refer to such a person.
(N): I first realised I was *bisexual* when I found myself lusting after both Mulder and Scully.

(Adj): Health Education needs to be tailored to individual needs, including those of bisexual men and women.
by UnVirtue November 25, 2004
 
6.
A person who likes men and women sexually, mentally, etc. Being Bi does not mean that a man is still "in the closet", or a girl wants attention by saying that she is Bi.
That guy is hot! Whoa, so is she!
by SuperSonicX February 01, 2005
 
7.
someone who is sexually attracted to males and females.
I'm bisexual :)
by Ali June 22, 2004