Her Boyfriend

"Billy? I didn't think you'd be back so soon."
Billy? Who is this Billy? You look down, and realise that you have somehow become a young man, quite well toned and muscled, wearing a pair of blue denim slacks. You resist the urge to tear off these constricting clothes, and decide to go with the situation.

"Hmmm, hello Helen babe, I couldn't keep away..."
She giggles and rubs her ass against you. You can feel your 'human' self getting engorged, and run one hand around her to feel her magnificent, still-firm tits, twisting your fingers around her stiff nipples.
"Mmm. That feels good. Oh, yes... I'm so fucking horny today."
She pulls away from you turning and running her hands over her thighs.
"Billy, I've got a bit of a confession to make."
"What is it, babe?" you say, watching this magnificent older woman nervously bite her lip like a teenager.