What is trash food?

So this is a coincidence but I was editing this video when I came across this comment and I thought it was funny because I'm cooking a bunch of vegetables in this video. But it made me think, what is trash food? Do you take it literally and define it as food you take out of the trash? Or is it like this person who commented calling bacon wrapped hotdogs trash food? Do you define food as trash if it's something you wouldn't try because you think it's gross? Is this considered trash food because I threw a bunch of random things together? By the way, I'm just making a quick dish from hotpot leftovers. But I'm curious to know your thoughts. Comment down below what you think!