If you didn't pick up on it the narrator adds his commentary on two of the statements which, to me, completely deflates the humor of the line.
-"His New Year's resolutions would blow your mind. That's why he doesn't tell anyone."
-"One should never shake his gifts. Trust me on this one."
Personally I just let those first sentences hang there for a second before moving on to the next one.
I know this is very nit-picky but isn't this what blogs are for?