We may never know. I've now heard several stories involving (a) Americans, (b) college, and (c) HEINOUS amounts of caffeine. One of them featured the poor suffering soul finishing their paper but also having an animated conversation in Spanish with a potted plant.

They didn't speak Spanish.

Stimulants could plausibly help you access the aether or other realms of existence, but the price on the mortal body is too high.