Wacko Science

"Woah, Dad! Not so fast! I mean, sure, you look authentic and identical to Summer in every aspect, but this is still your wacko science at work!" Jacob started.

"Wacko Science?" the fake Summer exclaimed in disappointment.
"Yeah, Wacko Science you've tinkered together in your lunch breaks! I mean, who's to say that you won't turn into a puddle of slime any given moment now? My point is, did you properly test it?".

This earned him a blank stare from Fake Summer AKA his father in disguise.

"You didn't, right?" Jacob deduced quite correctly.
"Son, maybe I should change back to discuss this with you more properly!" Fake Summer confessed.

Next she pushed a button on the device. Her whole body glowed green and a second later his father stood in front of Jacob. In just his boxers.

"Ah, good to have my testicles back!" David exclaimed happily while Jacob just facepalmed.
"Oh well, Dad...".

"Yeah, son, that's me!" David chuckled. "So, about the testing issue... As you've correctly deduced, this invention is Wacko Science. Which means there isn't any proven scientific standard to hold it against!".

"Ah okay, Dad! But how scientific does the standard to hold it against really need to be?".
"Son, what are you getting at?" David asked intrigued.