Attracted to both males and females, and comfortable having sex with both genders simultaneously in multi-partner situations. Amibisextrous
people are often comfortable having sex with almost any partner, group of partners,
people they met 5 minutes ago, etc, with little restraint or pretext.
Not a synonym for
bisexual, which is simply a person attracted to or sexually active with both genders.
I accidentally walked into the back bedroom at the after-hours party, and
saw Joe fully involved with Michelle,
Amy, and both of
Amy's boyfriends ten minutes after he arrived. That boy is truly ambisextrous!