I came across this video and somehow got reminded of a phenomenon that occurs with insurance agents. The video shows a man — who identifies himself as a Senior Brand Manager of a vacuum cleaner company — cleaning an area of the dirty floor of a subway station with his vacuum cleaner before spilling food over it and eating the pieces off the ground. He then proclaims his upmost faith in his product’s effectiveness.
“Eating one’s own dog food’’ describes what he has just did. The phrase refers to a situation in which someone uses their own product to demonstrate the quality of it and their own personal conviction in their product. Such a practice is actually quite prevalent with insurance agents.