Hadaka-jime
(naked choke) 
"So called because this choke can be equally well
applied to a naked man, since the jacket plays no part in it's
execution. Apart from this it bears a close resemblance to the
single wing , in theory and in effect.
Pass your right arm round Uke's neck and bring the hand back towards
you, so that it will grasp your left arm just above the elbow.
Now place the palm or little finger edge of your left hand against
the back of Uke's head, pressing foreward with it while pulling
back and away with your right forearm, in doing so the thumb of
your right hand presses into Uke's throat."
