Looking, but not sounding, the part

Finally, as he was about to cum, he just exploded in an orgasmic daze. A flash of light filled the room once more, and when it faded away, a naked Alison stood there!

"Oh my..." was all she brought out. Next, Walter called for Steve. "Hey son, you may come in now!".

As Steve did so, he stared at the apparent Alison in awe, unable to believe what he was seeing. His crush now standing right in front of him.

"Wow... This is amazing," Steve said with wide eyes. He turned towards Walter, who now looked 100% like Alison. A very naked and very aroused Alison.

"I bet you didn't expect this, did you?" she teased, still sounding like his father.

Walter looked at himself in the mirror and grinned. "I guess I do make a pretty decent Alison," he said with a laugh.

"Yeah, by the looks of it! But you don't sound the part!" Steve glarreed daggers at him.

"I know, and there is another spell to fix that as well! But..." Walter said and looked at Steve with uncertainty in his eyes. "There's a catch to this spell," he said slowly, trying to find the right words. "It requires... Well, it involves some sexual acts in order for it to work properly."

Steve looked back at his father, confused but also curious. "What kind of sexual acts?" he asked cautiously.

Walter sighed heavily and sat down on the bed next to Steve. "Okay... So there's a part of the spell that requires me to perform oral sex. With another person..." he said awkwardly. He paused for a moment before continuing, "And since you are already here... But don't worry! I' ll make sure not to go too far."

Steve stared at his father in shock but quickly tried to hide it behind a laugh. "Okay... That's hilarious! I always fantasized about Alison giving me a blowjob" he said sarcastically.

Walter simply rolled his eyes and chuckled as well. "Come on, son... It's just another part of the spell." he teased back, followed by "Let me just recite the spell, then you need to get into position!".

Steve shook his head with amusement but couldn't help but feel curious about how everything would play out. Now, he heard his dad reciting the spell and saw how he looked at him with doe eyes.

"Done! And now son, it's your part!" Walter grinned at him widely and with excitement, which, due to the fact that he used Alison's face for his over-exaggerated mannerisms, looked a bit comical.

Steve instantly froze.

"Come on, son! What's the matter? Alison is not gonna get any fresher than this!" Walter tried to softly coerce him into action.