My dad had a friend that used to come around the house once in a while and he was probably the biggest liar I've ever known. I was just a little kid at the time but even I recognized his stories were too crazy. I'll just give two short illustrations.
Firstly, just for some background, he lived in a lower middle class neighborhood. Lots of working class/blue collar types lived there. It was definitely not a high income neighborhood. Which is why it was so weird he said he was a "Swiss banker." Even weirder that a Swiss banker would have a missing front tooth. But no worries, he had a story for that. He was parachuting in the Alps and he hit the side of a building, hence the tooth. Sound like something from a movie? Probably cuz it is. But he was serious.
A second thing was he asked us if we would take this dog off his hands, a three-legged German shepherd. My dad liked this guy for whatever reason so he agreed, much to the chagrin of my mom. This is where it gets weird: he claimed the dog used to belong to Elvis Presley himself. This was the early to mid 90s. Elvis died in 1977. Even if he got the dog the day before he died, it would have made it close to 20 years old by the time we got it. It was nowhere near that old. Probably 3 or 4. Anyway, the dog ended up biting my sister, my mom freaked out, and I think their friendship died down after that. My mom was willing to tolerate his bullshit when it was harmless, but when it lead to strange 3-legged dogs biting my sister, shit was on.