A sexual orientation in which a member of both sexes must be present in addition to a dual-sexual individual in a sexual scenario for that dual-sexual individual to become sexually aroused. Members of both sexes do not need to participate, but simply be present. For example, a dual-sexual individual could be intimate with a woman, but only if another man is present. This other man could simply sit in the corner and read the newspaper, but so long as he is there the dual-sexual individual will become aroused.
by Condor Jenkins March 7, 2011
Someone who is attracted mutually exclusively to both sexes. A dual sexual is attracted to males approximately half the time (e.g. Tuesdays, Thursdays, Saturdays) and attracted to females the remainder of the time. This is not to be confused with "bisexuals" who are attracted to both sexes all the time.
by GayGiraffe September 15, 2014