The master race.

A sexual orientation which refers to the aesthetic, romantic, and sexual desire for people of either gender. Often thought to cover the range between the two extremes of homosexuality and heterosexuality on the Kinsey scale. A bisexual is not necessarily attracted to both genders equally; they may very well be more attracted to one gender than the other.

Just remember, appearances can be deceiving. Someone you think looks straight may not be; likewise someone who to you looks gay, maybe bisexual. Don’t judge people.

Bisexual is sexual attraction to two or more genders. Someone who is bisexual can be attracted to men and women, men and nonbinary people, women and nonbinary people, or women, men, and nonbinary people.

Bi does not mean "attraction to men and women." While a bi person may only be attracted to men and women, that is not the only kind of bi to be.

source: I am bisexual

Reading some of the above answers showed a rather entertaining mix of beliefs concerning bisexuality, mostly just attacks on it vaguely disguised as definitions. I don't care about the fact that you can write well, it doesn't persuade me that I'm 'mentally ill' at all. Bisexuals, like me, are simply people capable of falling in love with people of either gender. It's a simple matter of love, and NOT a step towards being gay. I acknowledge the fact that there are a lot of people out there who claim to be bisexual when they're really straght/gay/lesbian, but the majority of these are attention seekers. I am NOT to be classed in this category; if I was an attention seeker, everyone would know. I haven't told more than two people in the whole world so far, excluding all the people reading this. And, contrary to popular opinion, bisexual people can hold down relationships with one person at a time. They don't find the need to run off and have sex with the first good looking person they meet. That person is a bigot, not a bisexual. Just because some bigots are bisexual doesn't mean that all bisexuals are bigots.

In conclusion, I'd like to say that bisexuality is a perfectly normal choice that, whether they like to admit it or not, almost 95% of the population of the world is sitting on.

A sexual orientation meaning someone is sexually and/or emotionally attracted to either the male or female.

Does not generally mean they are overly-sexed, confused about their sexual preference, trying to hide their true sexuality or sleep around with anyone they can find.

Bisexulality is quickly becoming more and more common - although often still used in derogatory terms, i.e. to portray slutty behaviour - as people become more open with their sexuality. It doesn't always mean they enjoy both sexes equally.
It is often more accepted in females, although that can also mean they might be thought of as 'easy'.

A person who is attracted romantically and sexually to both genders; male and female.

It's the most uncommon sexuality, as people are either heterosexual (most commonly) or homosexual.

Often enough, bisexuals experience some form of discrimination, doubt or questioning. Many homophobics do not like the "homosexual" aspect of being bisexual, and there are also people who think bisexuals are:

* Greedy.

This is bullshit, because you can't be "greedy" because you're ATTRACTED to both sexes, doesn't mean you HAVE both sexes. Plus even if you do have both sexes, it's their choice to be with you, right?

* Can't make up their mind/sexually confused.

This can actually be true, but not all bisexuals are confused. Is it that hard to like both?

* Only do it for attention.

While it's true you get some girls who claim to be bisexual to appeal to guys/guys claim to be bisexual to appeal to girls. Again. It doesn't mean all bisexuals are "heterosexuals in disguise".

* Like both males and females equally.

Again. SOME do, but not all. Some bisexuals prefer one gender over the other, it doesn't diminish their bisexuality though. It's possible for a man to prefer women, but would not mind having a sexual and romantic relationship with other men also. It's what bisexuality is all about.

BEST of BOTH worlds.

Someone who is physically, emotionally & sexually attracted to both sexes but not nessarily equally.

Bisexuals are NOT sex-crazed lunatics who just want to go around and fuck everything in sight, and being a bisexual is not just a "phase" in becoming gay.

Some parents find it hard to accept their children when/if they find out they are bisexual which causes them to start treating their child like they are a piece of shit or even abusing them for being "different", but being bisexual isnt a disease, there isnt anything wrong with it.

Bisexuality is more common among women than it is among men because most men are worried that if they 'come out' then their friends will just cast them aside and/or assoaciate them with so-called bisexuals who are just sex crazed lunatics who dont care who or what they fuck.

To Be attracted to People of any sex.
People who are bi are not: confused (PAM!!), Sex Crazed, or any thing else thats not true.

Liking people of the same gender and people of different genders
This definition is needed because some people believe bi- means only men and women.
but people who are bisexual can be attracted to people of all ganders just like a pansexual