An LGBTQ+ friendly way to say that you're straight, because the internet is just a bunch of snowflakes locked in a safe and hidden in the Arctic
Guy 1: What sexuality are you?
Guy 2: I'm semibisexual.
Guy 1: What does that mean?
Guy 2: I'm only attracted to the opposite gender.
Guy 1: So you're straight?
Guy 2: Yeah, but I'm also not homophobic.
Guy 1: We're no longer friends.
No one actually uses this, using this term is a excuse to over complicate your sexuality. If you use this term, just say you are straight, gay, or lesbian.
The paradoxical state of being straight while attracted to traps.
Suppose you are a male and you find traps attractive. Since attracted to femininity is not gay but attracted to a biological male is gay, you are both gay and not gay at the same time.
However, as you already knew they were traps, the quantum mechanic known as Schrodinger's Trap does not apply. Thus, your sexuality lean towards bisexual despite you being only attracted to the opposite sex. Rendering you SEMIBISEXUAL.