The exact origin of this clip is not documented in the listing, so it circulates mainly as a short soundboard and meme audio rather than as a widely credited quote. Its spread follows the usual pattern for phrase based sounds: one clear line gets clipped, shared and reused because it works out of context. Train jokes, model railway videos and arrival gags give it a natural home, and the specific name Sam keeps it feeling personal instead of generic. That mix of a specific name and a simple statement is why creators keep returning to it.