A few years ago i worked in a hospital as a cleaner, it was a key job so i turned up stoned in the middle of the night roughlty 3.30am to start officially at 2.30 am (sign in the book method), and check the staircase for tea stains, spot mopping as i went(i did have more duties but i had misled others into thinking it was their area). Anyways i ended up with a 5 min work 4 hour shift. So i used to be stoned getting to work and getting stoned at work. I had access to the roof, and the firexits were not alarmed so i could prop them open with bin bags. So as i'd been doing this a while, i got into a routine of buying two cans of coke and necking them after my first of the night, but i found that i could sleep rather easily. i'd often sleep on two chairs with the feet end propped up against the door of my store cupboard.
As i worked 6 out of 7 days, i found i was religiously following this coke diet, and was forever falling asleep after my heavy duty work!(and j).
It's been about 5 years now since i got sacked (they got a hole-punch clocking in machine), but to this day any coke makes me feel sleepy, and i can easily fall asleep after drink a litre on my bed, stoner or otherwise.

Anyone else had this or similar?