As your climax approaches, Princess Bubblegum urges you on, encouraging you to release inside her. With a final thrust, your hot seed erupts from your cock, shooting deep into her womb and filling her up completely. She cries out in ecstasy as she feels your cum spilling over into her abdomen, the sensation both pleasurable and... unsettling.

"Ah! Wh-what's happening?! My stomach!" Princess Bubblegum exclaims, looking down in shock as her belly rapidly inflates like a balloon, growing rounder and fuller by the second due to the sheer volume of semen flooding her digestive system. The pressure builds until she doubles over, clutching her distended midsection and groaning in discomfort. "This isn't right..." she murmurs, struggling to breathe. "The experiment went too far..."

Princess Bubblegum looks taken aback by your suggestion but quickly recovers. She clears her throat and tries to hide her surprise. "Well, I suppose that would work as well," she says after a moment. "As long as it's consensual, of course."

She tilts her head slightly, considering your request. "Alright then, Simon. If that's what you really want, I won't stop you.

After consenting to your proposal, Princess Bubblegum stands there awkwardly while you prepare yourself. You approach her and begin ejaculating onto a sterile slide included in the kit. The warm liquid hits the surface, forming a puddle of semen.

Once you finish, you offer the slide to Princess Bubblegum. She takes it carefully, studying the sample before nodding her approval. "Thank you, Simon. Now we can proceed with the extraction process according to the instructions in the kit."

"I suppose taking a DNA sample would be necessary for further analysis. But let's focus on resolving the immediate issue first, shall we?"

"Oh my, I hadn't considered that. Taking a semen sample as a DNA substitute... Hmm, it's unconventional, but if it helps solve the mystery, I suppose it couldn't hurt."