Imagine if a new camper was proclaimed to be Hecate's kid. And they ask him on his name and he's like: "I'm Harry." And all the campers gasp and he's like: "What?" so one of his siblings come to him take his shoulder and say enough loud so everybody can hear it: "Yer a wizard, Harry." And everyone's like: "Welcome back, mister Potter." And since then everytime someone needed him they just called POTTER! and he's just like SUP?!