Anyone who smokes weed on a regular basis knows that, after awhile, it actually keeps you awake. So, go that route at your own peril.
However, tossing one off usually does the trick.
(a.k.a. - Choking the Chicken, Beating the Meat, Shaking Hands with the Governor, Abusing the Usual Suspect, The One-Handed Humpty Hump Love Pump, Wiggling your Worm, Zipper Surfing, Yanking your Yam, Launching the Hand Shuttle, Flogging the Bishop, Burping the Worm, ...
Making Gravy for the Buiscuit?..
Choking the Sheriff and Waiting for the Posse to Come?..)