Just how many cigarettes can one smoke in a single day? This is assuming that
a) One is not really trying to smoke a lot of cigarettes; it just happens naturally, and
b) The full day lasts from waking to sleep again, regardless of the actual passage of hours.
Speaking for myself, my answer to the question apparently maxes out around sixty five, the point at which the fingertips get kind of tingly (not in a good way) and the throat feels like one has been gargling with volcanic ash.
Don’t think I’ll be doing that again for a while.