Training4life:
No one has given you the advice you asked for so far... well here it is:
1) Spit in his face ( aim for the eyes )
This will gross him out and distract him ( if you hit him in the eyes he wont be able to see )
2) Simultaneously grab at his penis and sack. Squeeze like a muthaphuckah. Don't let go, he will be paralyzed.
3) While you are grabbing his nuts use your best hand and punch him in the face ( preferable nose, this will cause bleeding and blur his vision). Once you have done this, goto part b.
3b) Quickly grab his head pull it down and simultanesouly jump up and knee him in the head. If you do this properly you should knock him out.
Let me know how it goes.