Before the GenderWave hit, Jessie Howard had known for a fact she didn't like boys. As long as she could remember she'd found them weird and gross, and she'd been so glad to move to a big city with a pretty accepting atmosphere and some bars where she could meet other women who liked women.
So, as you might guess, the GenderWave was a particularly striking experience for her. Her body had felt odd and itchy all over, and she'd shut herself in her bedroom and undressed to see if she had a sudden rash or something. But what she actually saw was her body start to change. It grew firmer, larger and hairier all over, her skin seeming coarser than before. Everything was larger, and it felt deeply weird, like she was Alice after eating the cake. She even felt her shoulders expand and her hips narrow inwards, her proportions totally different.
The weirdest and most striking changes soon set upon her chest and crotch. In a deeper voice, she grunted as her breasts receded until she had a flat chest with pectorals faintly visible beneath. After this she looked in the mirror to work out what was happening to her lower body, and saw her labial lips fuse into a scrotum. And as her body started to push something down into it, and she saw one lump and then another settle in the scrotum, something clicked. He wasn't a woman anymore. Just to affirm that, her clitoris engorged and swelled massively until it protruded several inches from between his legs. He had a penis.
Slowly settling down from his transformation, Jesse realized something with a deep sense of certainty. He liked boys. He always had. As long as he could remember he'd found them cute and attractive, and he'd been so glad to move to a big city with a pretty accepting atmosphere and some bars where he could meet other men who liked men.
"Well, even if I'm a guy now at least I'm still gay!" he laughed to himself in his new masculine voice.