The act of catching a fart in your hand and throwing it in the face of a friend or foe....
The name is in reference to famous primatologist, Jane Goodall. It implies that Jane learned many bad habits from her chimpanzee friends while living amongst them all those years. One habit being the tendency to defecate into her hand and throw it at others.
While my bother is playing video games I like to fart into my cupped hand and throw it in his face and scream, “You just got Goodalled bitch!”
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"