I knew a guy like this in high school. He spun amazing stories. Like about how he was the #1 ranked boy scout, but there was another scout who was so cold, everybody called him the ice man. Ice man was jealous of his boy scout skills, and always tried to sabotage him. But one day, they were cleaning up lanterns. He put his away perfectly, but Ice man wasn't so careful, and burned the whole camp down, but blamed it on this guy.
Or he was in a tae kwon do tournament, and it was crazy, and there were three matches going on at the same time and the crowd was going crazy, and he got to the final match but kicked too fast for the referee to see, so they called a foot fault and he lost.
There were a billion of them, like how when he was trying to impress some girl he was suddenly the best poet at the poetry slam he went to. Or how he was in discussions with Palladium to write an expansion for their rpgs. I think something about drag racing.