when your so trash, your even free.
"dude, bill is totally free dog water!"
People who call themselves "Dog-free" are people who absolutely hate dogs, refuse to be around them, and bitch when they see one doing something slightly out of their liking. The term came from the subreddit r/dogfree.
Person 1: Dogs are absolutely disgusting, I consider myself to be Dog-free!
Normal Person: what the fuck is wrong with you