We had a guy like him in a company I used to work for, none of us could figure out we he needed to boast to his peers, we all knew it was BS. Nothing wrong with boasting to the girls at the bar, but on the flight deck .
In fact he didn't even need to shovel the crap because he did achieve a lot. Moved from ops to the cockpit and eventually was a 737-800 captain. I remember the individual telling a flight attendant, on my flight, in the cockpit, how he was selected by NASA for the astronaut program, had a Masters at MIT in physics, flew "F16's" for the Navy out of Pensacola, but did not need a G suit as he was so fit. We used to nickname with the same name as the famous blow up doll in Airplane (the movie).