Replying to Preferred sleep position in class

I find myself dozing off more and more during class. And somehow my grades are still firing up everybody's ass, which is quite surprising.

Anyways, what is your preferred sleep position? I have a secret technique that I use occasionally, but lately i have just been using the classic arms-crossed and head in arms position. At times when I have a binder or some sort of book in front of me i just face plant into it, or if i'm really exhausted i will just hold up my face by using my arm, elbow on table, and fall asleep in that sitting position.

It's also good to make sure you have a friend who sits beside you that pokes you if you need to start writing something. It pisses me off when they start throwing pencils though.