Tasty Catburger is an Internet term from a classic clip from the cartoon "SpongeBob SquarePants," in which Mr. Krabs confronts a customer with the question, "Do you want to help Plankton steal my delicious Krabby Patties?" and is on high alert for the secret recipe for Krabby Patties.

The term "Krabby Patty" is used on the Internet to refer to the idea of being on high alert for something, and having a serious sense of defense against others.