Guy 1: Ayo bruh are you gay, bi, or straight.
Guy 2: Nah fuck dat im Vanillasexual
Guy 1: I hate women

"I want to tell my girlfriend about my pegging fantasies, but I worry she'd think it was too weird; she's a vanillasexual."

You could tell he was vanillasexual for flirting with the aesthetically pleasing girls.