Have him wash you out.

Wiggling your fingers behind his head, you cast the same spell on him again. Old Georgie's face becomes confused, and he tries to get you off his lap. "You're not going to believe this," he says, wriggling on the toilet, "but I gotta go again."

Smiling broadly, you drop your hips on him, and squeeze your pussy tight around his cock, keeping it inside you. "Well this'll settle both problems wouldn't it?" You say, strengthening the spell. "Just let go, Georgie. It'll wash you out of me and then problem solved."

He still doesn't look convinced and tries to convince you to get off, so you tweak the spell a bit more, making the call of nature more urgent. He scrunches his face up, but finally gives up. He apologizes to you profusely and lets go.

Your face lights up in joy as you feel his warmth fill you completely. Your back shivers and your lip quivers when the pressure builds up around his cock and forces it out of you. Piss and cum rain over him into the toilet and your tail invisibly forces his still pissing cock back into you. "Oh yes, Georgie..." You moan, holding him close to your body. "Mmm...clean out every drop of your stuff with your pee. We've got to get it all out of me. Mmm..." You plan to repeat this rinse cycle a few more times before ending your spell, cleaning the pair of you up, wiping Old Georgie's memories and getting back to your host.