I was thinking maybe this suggestion would be too gross... but I said what the heck!!!
So, my idea was if you serve an undercooked burg or a dropped burg, there is a chance that the customers will get sick!!!
Sicknesses:
Diarrhea:
If a customer gets this sickness the customer will start violently pooping everywhere.
Vomiting:
If a customer gets this sickness the customer will start spraying out vomit.
Tapeworms:
If a customer gets this sickness the customer will barf out a tapeworm. The tapeworm will start eating anything in sight-- customers, ingredients and even the player, getting bigger as it does.
I am open to all addon suggestions!!!