No, you should not plug a microwave into a refrigerator or any other appliance for that matter. Each electrical appliance has specific power requirements, and plugging one appliance into another can lead to serious electrical problems and potential hazards.
Microwaves and refrigerators typically require different voltage levels and power capacities. Plugging a high-power appliance like a microwave into an outlet designed for a refrigerator may overload the circuit and cause it to trip or even lead to electrical fires.
It's essential to use the appropriate outlets for each appliance and avoid using extension cords or adapters that may not be suitable for the appliances' power requirements. If you need additional outlets or have concerns about your electrical setup, it's best to consult a licensed electrician to ensure proper and safe installations.