To prevent your bagel from getting stuck in the toaster, make sure to slice it before toasting. Additionally, it's a good idea to check the dimensions of your bagel to ensure it fits properly in the toaster slots. If you notice your bagel getting lodged, do not use metal utensils or objects to try and extract it. Instead, unplug the toaster and allow it to cool down before safely removing the stuck bagel with your hands or gentle shaking.