A popular meme format where the overweight friend (the "fridge") gets overprotective and won't allow the attractive friend (the "snacks") to go out with people who ask them out.
This meme format plays on the dynamic of friend groups where one person acts as a protective barrier, similar to how a fridge protects snacks from being taken.
The meme is often used to describe situations where someone is being overprotective of their friend, preventing potential romantic interests from approaching them.