Woow. Okay, I think this one wins .I forgot to mention the one time I was walking our of the park with my dogs when I saw a woman get out of her car with her ... CAT ... on leash.
I told her it wasn't a really good idea to bring the cat in the park and she says "It's ok. Buster LOVES dogs!"
I said "That's fine, but not all dogs LIKE cats. Some would rather EAT them."