Haha, ha, hahaha, ha, no. Mine is absolutely terrible! But then again, I never really cared enough to actually study a dictionary. I can at least communicate my point effectively. So, at least I can do that much. Generally speaking, mine is on par with the general public, which is intentional. If I used words that only a physicist would know, I wouldn't be able to order a Big mac as easily as the little seven year old behind me in line. So I tend to, dumb myself down, if you will. Plus, I honestly believe I would confuse myself if I knew too many big words. :'D
I'm perfectly fine with asking someone, "What does that word mean?" I have no cares if it makes me look stupid.