It Came From the Fridge/Playing With

Basic Trope: Mutant life forms grow on spoiled food in the refrigerator.
Played Straight: Bob leaves some leftover lasagna in the fridge and forgets about it for a month. It turns into an Eldritch Abomination that attacks Bob.
Exaggerated: The lasagna grows an entire civilization.
- Experts wearing HAZMAT suits are required to clean Bob's refrigerator.
- The Festering Fungus growing in the crisper drawer spreads out and overtakes the apartment.
- The nasty refrigerator is only part of Bob's Trash of the Titans.
Downplayed: Although a lot of the food in Bob's foul bachelor fridge is moldy, there are no lifeforms above fungus.
Inverted: Eldritch Abominations are placed into the fridge and turn into acceptable food.
Subverted: Bob makes an effort to use up food before it spoils.
Double Subverted: But he forgets to change the baking soda, and a Monster of the Week emerges.
Deconstructed: Obviously, it presents a real health hazard.
Reconstructes: Bob reminds himself to clean the fridge at least every couple of months and not allow food to stay in the fridge more than a week or two. He also keeps the fridge and freezer at a low enough temperature to keep micro-beasties at bay.
Parodied: The Eldritch Abomination becomes a pet, of sorts.
Lampshaded: "Hey, Bob, do you mind if I get rid of this, or are you doing a science project on the regenerative properties of three-month-old tuna casserole?"
Averted: See "Reconstructed"
Enforced: Guys Are Slobs, Monster of the Week, Gross-Out Show
Invoked: Bob is very forgetful, and puts a Tupperware container in the fridge.
Defied: Bob wrote a date on the container and makes sure to keep track of it.
Discussed: "It's a wonder Bob hasn't died of food poisoning!"
Conversed: "I wonder if bachelorette-fridges are that gross?"
Played For Laughs: Almost always is.
Played For Drama: The fridge-monster is trying for World Domination.