Bi+sexuality is used in activist and scientific contexts as an umbrella term for all sexual orientations in which a person can find people of two, more or all sexes sexually attractive. Bi+sexuality thus includes bisexuality, pansexuality, multisexuality and polysexuality.
A bisexual person is romantically and/or sexually attracted to people of two or more sexes or experiences sexual attraction to people of any sex. However, definitions of bisexuality are very different and controversial.
As the saying goes, "A little bi never hurts!" It means that someone feels attracted to both the female and male sex. | | 
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