ok wait also. the famous bobby chasing john off the property with a shotgun line IS explained in the Supernatural: Bobby Singer’s Guide to Hunting book. Somewhere around the mid 90’s john drops Sam and Dean off with Bobby to go on a hunt in Montana and then essentially drops off the face of the earth. he’s gone for so long that Bobby eventually decides to tell Sam and Dean that he must have died. sam apparently takes awhile to process this and goes very quiet and dean gets really angry. bobby says this is the biggest fight he and dean ever had. then dean disappears into the night and returns hours later with john in tow. dean’d tried to hitchhike to montana on his own to find john and accidentally caught his dad, totally unharmed and completely fine (capable of answering bobby’s phone calls, bobby takes care to mention john did own a cellphone at this point), on the way back. john packs the boys into the impala and tells them they’re going to stay with somebody who “actually cares about them” and bobby becomes so enraged that he pulls out the shotgun and starts firing.
