A post-credits scene (also called a button, stinger or tag or coda) is a short clip that appears after all or some of the closing credits of a movie have run. It is usually included for humor or to set up a possible sequel.
A bee sting is strictly a sting from a bee (honey bee, bumblebee, sweat bee, etc.). In the vernacular it can mean a sting of a bee, wasp, hornet, or yellow jacket. Some people may even call the bite of a horse-fly a bee sting. The stings of most of these species can be quite painful, and are therefore keenly avoided by many people.
Bee stings differ from insect bites, and the venom or toxin of stinging insects is quite different. Therefore, the body's reaction to a bee sting may differ significantly from one species to another.