*shrugs*. It depends on your definition of 'random'. Some people are ngẫu nhiên and immature, and think that the thêm times they randomly say 'Jelly Beans!' all the time, the thêm ngẫu nhiên they are. I personally don't see ngẫu nhiên as a personality trait. I'm unsure of the actual definition but I see ngẫu nhiên as unexpexted. I guess bạn can make ngẫu nhiên actions, but I don't see how bạn can 'be' random, unless you're making that ngẫu nhiên action, but that doesn't mean you're a ngẫu nhiên person. To answer your question, I guess, not really. I just say what I think, I always have done. I don't necessarily think that wanting to post a witty answer is then making bạn thêm random, just thêm aware and witty. Like I đã đưa ý kiến before, I don't see ngẫu nhiên as a personality trait.
*shrugs again*. My mind is a weird and confusing place. :P