Make your body fall asleep before your mind does. Article on it here. Pretty much, at night time the normal process is for your mind (you) to fall asleep then for your system to shut down and your body enter it's sleep state. If you get your body to fall asleep first, however, you get whole bunches of CRAZY SHIT that'll happen and it'll feel almost like a drug trip except for the lack of a lighter wallet and skipping the whole illegality bit.
For you ADD kids, the TL;DR
1. Lie in bed and close your eyes. Wait without falling asleep. DO NOT MOVE AT ALL.
2. After a while (10-20 mins) you will get a VERY powerful urge to move. DO NOT MOVE AT ALL
3. there is no 3
I highly recommend reading the above link if you're at all interested.
I'll share what normally happens with me (almost everyone experiences something different):
1. I lie down and wait. Urge comes and I ignore it.
2. My whole body goes numb and I start getting weird tingling sensations.
3. The vibrations begin. These really vary, sometimes it's very subtle and sometimes it feels like a freaking earthquake.
4. Hypnagogic imagery starts (lots of weird colors and stuff)
5. CRAZY SHIT
I thought it might be interesting to you guys because you guys are all lazy bastards and this thing is the pinnacle of getting something awesome for doing literally nothing =P
Try it tonight. =O