Having a big vocabulary is like having a big truck...

...everyone assumes that you're just overcompensating! Or maybe they will just call you pretentious. Why? Because they despise your intellectual hard work?  No.  Because deep inside, they wish they weren't such a lazy ass. They don't want to be a foolish mocker.

http://maverickphilosopher.typepad.com/maverick_philosopher/2011/07/word-of-the-day-pot-valiant.html