You know that feeling when you feel like swearing, but you can’t because curse words are not allowed in the house. Well I imagine this is how this pooch felt when he saw a mailman approaching his door.
This dog shares the same feeling about mailmen as most dogs do… he doesn’t want them anywhere near his home. When he saw one approaching, he was about to give him a piece of his mind and scare him away with his barks, but then he remembered his humans are right there and they taught him not to be hostile towards other humans. So the best he could do is invent a new sound that some describe as baby Sasquatch after the Chipotle hits.