Many years ago I was managing a chain pet store. I was in my early 20s and had long hair. I didn't "look" like a manager. We offered samples of dog and cat food at the cash register and some woman gave me a real snarky answer when I asked if she wanted some free samples of cat food for the cat she was buying toys for. She said she feeds her cat from her plate and doesn't give it cat food. She said it like I was an asshole for asking if she wanted free samples. I nicely said that cats have a specific digestive system and cat food is specifically formulated for cats. She angrily said "Garfield eats lasagna, my cat eats what I feed him too." I just said "Ok, have a nice night." and walked away.
About an hour later one of my employees tells me there is a woman on the phone who wants to speak to the manager. So I grab the phone and ask how I can help her. She goes on to tell me about the rude "long hair kid" who told her she was a bad owner for feeding her cat human food. That never happened. Then she goes on to tell me that the same "long hair kid" threw one of the ferrets into the ferret bin from 5 feet away and said "I'm playing ferret basketball." That ABSOLUTELY did not happen.
I let her go on and on, trying not to laugh. I finally said "Ma'am, I am that long hair kid, and none of what she just told me actually happened." she started to cut me off "....furthermore you are no longer welcome in my store." She huffed and hung up. Never saw her again.