Nerdy joke-question of the day comes from Double-D:
If you're doing a PhD in Applied Statistics, specialising in sampling theory, how many times do they make you write your dissertation?
(This was the basis of an actual conversation between me and a colleague, where we were arguing over what I believed to be an entirely sensible generalisation from a single case. He pointed out that he had a degree in statistics and thus could be assumed to have expertise in the area; I countered that he only had a single degree in statistics and would have to take his finals at least 30 times before I could be confident he hadn't passed them by luck).
Probably depends on whether you're a Bayesian or not.