There are many bad ideas on the internet. Arguing with strangers in comment sections. Clicking “unsubscribe” on obviously fake emails. Letting a 14-year-old explain cryptocurrency to you. But calling in a fake emergency on an 81-year-old grandmother who plays Minecraft for charity? That may be one of the dumber ones. Especially when that grandmother is Sue Jacquot, better known as GrammaCrackers, and she responds to the whole thing with more grace, humor, and backbone than…