How can you scam someone in maple story lol plzzz tell me if you no plzzz

lol im not going 2 tell u muhahahaha!!!!!!!!!!!!!!!!!!!!
EDIT: This isn't really a scam but it works for me, ok get on an orbis ship then drop stuff then sit in a corner for the rest of the ship flight, someone might trade you... don't answer it. if he drops somthing next to you pick it up, it worked for me.