Not even the best invention

Once the door fell into its frame, both transformed father and son looked at each other awkwardly.

"Well, thank god she is gone now! But it's getting uncomfortable on the floor!" Walter-Alison says, next she gets up and walks over to the large couch where she made herself comfortable.

"How gullible is she that she believes I'd be such a lousy inventor that I'd leave myself stuck and unable to change back? Stupid cunt. I can change back at any time I want. At least while I'm not pregnant. Such a pity, really!" Walter fumes with hatred towards his wife.
"This isn't even my best invention." Walter continues.

"Uh, you don't mean..." it came from Jacob.

"Yes, son! I mean..."