We've been hooking up for a while, and I'm excited to have you over to have a go at it. I put on something sexy and look really nice. I tell you I'm excited to fuck your cock when you mention you forgot a condom and suggest I should give you a blowjob instead. I'm super annoyed and even wonder if you planned to get a blowjob the whole time so you forgot the condom on purpose. So I reveal I'm a witch and have other plans! I'll be making your cock into a dildo to use for my pleasure since clearly you're not considerate enough to use it. You try to protest, but I silence you with my magic. Now that I have your cock, I don't need you anymore, so I ask how you feel about eating flies the rest of your life- since you'll b a female toad after all! I transform you and you make croaking sounds. I tell you about your new life and my plans. If you're bad, you'll be ending up in a potion or brew. If you're good, maybe I'll even get you a male companion. I'm sure either way you'll adjust to being my little cockless creature.