1. Throw out your stuff in the fridge that has no legitimate claim to be "food"
2. Move Moldy Pink Mess to somewhere other than fridge, such as your fridge, your bathtub, or the Ukraine.
3. If space is still short, move actual food/beverage items to your fridge.
I am thinking that Mr Kilserv, Mr 0282, and Mr Incognito might require some fridge space, you see. Plus, the fridge smells like an armpit due to items associated with #s 1 & 2, above.