http://www.youtube.com/watch?v=FRIDAT4RZOU 0:57 to 1:02
I was sparring one of our fighters (Holds a title belt in Muay Thai and MMA) and I had him in a clinch and we had a neutral bout of knees and neck wrestling going on when I could feel him manuevering to get better position (which he was doing) and I pummeled my hand under and behind his neck and as soon as he got out and started to circle I grabbed uner his thigh and (pulling back on his neck and lifting/arching his leg) dumped him.