cross one's eyes = . Look at the tip of your nose. Once you've done this, your eyes are basically crossed. (angling them inward toward the center of your face ................................................................. Why people cross their eyes? - To annoy someone, amuse your friends, or add a little something extra to your comedy routine is a fun, easy trick that never fails to get a reaction of some kind. ......................................................................... http://www.ehow.com/how_2060528_cross-eyes.html Read more: How to Cross Your Eyes | eHow.com http://www.ehow.com/how_2060528_cross-eyes.html#ixzz14A5xv2WH like this >_< hahaha

斗鸡眼，对眼:D 这句话是说“你要是斗鸡眼了，就会老是那样了” 开玩笑的话吧，也可能像E说的那样是父母吓小孩的^^

Ha ha. It's a silly warning given by parents to their kids. Crossing your eyes means looking at the tip of your nose, so you eyes point inwards. Parents tell kids that if they do that, their eyes won't go straight again. It is very stupid advice actually. Crossing your eyes is in fact a very good exercise.

Jackie chan does it all the time in his movies. :P

it means to angle your eyes so they are both looking at the center of your face http://www.wikihow.com/Cross-Your-Eyes