2 Minute Spoiler: Splice (2009)

A crazy scientist couple (played by Adrien Brody and Sarah Polley) play God by making genetic travesties for the sake of some demonised Evil GMO corporation. The first example is a pair of, I dunno, fleshy slug-things that will revolutionise farming somehow. That's when they're not too busy tonguing each other.

That's right, two giant, flaccid dick monsters just going at it while the crowd

cheers them on.

The two geneticists responsible for making me scared of my own penis have a few relationship issues to work through. Really bad issues, that translate into them secretly conducting a second genetic experiment that results in a higher form of mutant life using some of Mrs Scientist's DNA.  She's motivated by the need to have a child of her own.

Or, in this case, a self-waxing penisrat.

This...thing quickly grows and evolves into something else that combines a human girl, kangaroo, bird, scorpion and about 7 too many kneecaps. The couple are forced to hide this creature in a barn and spend time teaching it to be less of a monster.  However, with Evil Corp closing in they are eventually forced to make some tough choices. Like whether to kill it, surrender it, set it free or...

...fuck it?

Wow, I can't believe Mr Scientist just did that, he just shoved his cock into the pet mutant like it was nothing.

Surprisingly, things end badly when flying kanga-scorpion girl suddenly changes gender, kills Mr Scientist, presumedly out of retro-homophobic rage, and rapes Mrs Scientist. The only sane moment in the entire film is when the monster gets its head caved in with a rock.

Climax: Mrs Mad Scientist falls pregnant to her own, husband-murdering creation and decides to keep the baby, despite it being a product of violent, incestuous bestiality.