What triggers you to fall asleep?

Well today in class i was just sitting down writing notes and next thing i know my arm slips off the desk and i realize i fell asleep for 4th time in that class.  Sadly this time i think people noticed when my arm slipped off and naturally i got embarrassed. Anyway what activity or whatever makes ya'll fall asleep?

Reading Charles Dickens books.

Jerking off does the trick nicely.

If I really want to sleep quick, I just ask the woman to talk about her family issues or just about things that annoy her.  

Usually knocks me out quick.

Watching/playing Dynasty Warrior games.

If I close my eyes, breathe through my mouth and wait a couple seconds I fall asleep.

My wife and I both fall asleep to the sultry, smooth tones of David X. Cohen and Matt Groening doing Futurama commentary. Seriously, we've watched so much of it right before bed that we now have a Pavlovian reaction to it.

It takes me forever to fall asleep, and I can really only do it in bed without much light/noise. I can't fathom how you "normal" people can fall asleep during class or watching TV. 

" Watching/playing Dynasty Warrior games. "

Pills because I am an insomniac.

I have to not have any electronic devices near me, which usually doesn't happen so I stay up until like 3am.

Many, many sleeping pills.

booze, not too much, but just enough

" It takes me forever to fall asleep, and I can really only do it in bed without much light/noise. I can't fathom how you "normal" people can fall asleep during class or watching TV.  "

I take big ol' does of sleeping pills. Depending on the tiredness/stress level, that may get me to sleep in 20-30 minutes, or it may be an hour or two. I've taken to running podcasts on my closed laptop while in bed lately, even though I know that psychologically that's probably terrible for my already bad sleeping habits.

It needs to be dark, quiet, and cool. I'm not one of those people who can fall asleep with a TV on, or people talking nearby. I do like the constant drone and breeze of a fan directly pointed at me though, and have slept with a fan for probably the last 7 years. I can go without, I just like it a lot.

I can't sleep well. I have never been able to get the trick to make your brain stop thinking long enough to go to sleep. It's really bad for me, because my brain has somehow trained itself to just start thinking about anything and everything when I get bored or don't have something to keep my mind occupied. Which sadly leads to many a night of me laying in bed ponding the finer points of life because I can't stop thinking about random things.

" It needs to be dark, quiet, and cool. I'm not one of those people who can fall asleep with a TV on, or people talking nearby. I do like the constant drone and breeze of a fan directly pointed at me though, and have slept with a fan for probably the last 7 years. I can go without, I just like it a lot.

As long as the conditions are right I sleep well and through the night, I just can't deal with distracting noises, light, or hot temperatures. 

"

Laying down in bed and turning off the lights usually will do the trick.

" A hard days work is the perfect sleep inducing drug. Really, whenever it's not that busy at work, it immediately translates into having trouble sleeping at night. "

" Laying down in bed and turning off the lights usually will do the trick.

Never fallen asleep in a class before, though I'd bet a lot of that is due to my fear of having to be woken up and then looking stupid.

"

Dark room soft bed a fan can't sleep with complete silence I need to drown out the voices.

I haven't been able to sleep properly since school ended. I really wish that I had an answer to this question.

Podcasts always knock me right out. The bombcast especially. Not because it is boring of course, there must be something about the guys' voices.

The sound of rain usually helps a lot.

Tiredness? HEY OH!

Like many people already said: dark, quiet and cool. 

Alcohol or sleep aids.

" Laying down in bed and turning off the lights usually will do the trick.
"

"The sound of rain usually helps a lot. "

"Alcohol or sleep aids. "

Usually to one of my favorite shows.  My Name Is Earl, Seinfeld, The Office, or Arrested Development.

" Laying down in bed and turning off the lights usually will do the trick.

Never fallen asleep in a class before, though I'd bet a lot of that is due to my fear of having to be woken up and then looking stupid.

"

Drinking coffee/caffeinated beverages.

For some reason, it has the opposite effect on me.

i don't know, a lot of times when i go to bed, i just lay there. i finally get to sleep after a while of just laying there.

i've almost fallen asleep playing forza motorsport 2. i was playing with my friend and i felt tired. the next thing i know my car is on the glass and my friend yelling into his mic. it was pretty funny to do that.

Ambient music and sometimes rain.

Being tired enough will trigger sleep for me, on those times when I just can't fall asleep I will shut my eyes & lie down so the body can at least rest while I drive myself crazy with lots of brain noise.

fapping always helps.

I've gotten so used to relying on fapping to fall alseep though, that it takes  at least two or three times for it to work now.

i have to have something on whether its the tv,  music or the sound of rain, i also read about a half hour every night.

" Laying down in bed and turning off the lights usually will do the trick.
Never fallen asleep in a class before, though I'd bet a lot of that is due to my fear of having to be woken up and then looking stupid.
"

Melatonin    

Watching anime puts me to sleep. Not saying its bad just saying it helps me sleep.

Closing my eyes and having nothing on my mind to keep me from thinking myself into staying awake.

Watching a documentary at night, or watching golf during the day on TV. Works like a charm.

Closing my eyes usually helps