Growing up, your mother read you the story of The Frog Prince, about a prince too vain for his own good, and was turned into a frog to teach him humility. So perhaps frogs were a thing you preferred to ignore, for that though that they were a stupid man magicked into one had been forever engraved in your brain.
So when you'd crept away from the party to get some air on the balcony, when you saw the slimy frog crouched beside you on the stone, you couldn't help but snicker.
However, when it talked, that's where everything changed. We can skip the part where you actually kissed him, thinking it would turn him back to human, and focus on the part where you looked down and you'd turned into a greasy frog yourself.
"Don't panic!" He exclaimed. "I didn't see this coming!"