"cootie" in Chinese (Simplified)
臭虫（儿童用语）- 假想的细菌
Definition
一种儿童用语，表示想象中的细菌或虫子，常出现在孩子们的游戏中。有时也指头虱。
Usage Notes (Chinese (Simplified))
非常非正式且带有儿童游戏色彩，经常用于取笑或“传染”，如“你有cooties”。不是医学用语，偶尔可指头虱。
Examples
He says girls have cooties.
他说女生有**cooties**。
Don't touch me, you have cooties!
别碰我，你有**cooties**！
The kids pretend to give each other cooties during recess.
孩子们在课间假装传**cooties**。
Relax, there's no such thing as cooties.
别担心，根本没有**cooties**这种东西。
He avoided her like she had cooties.
他躲着她，好像她有**cooties**一样。
When I was in second grade, everyone thought catching cooties was the worst thing ever.
我二年级的时候，大家都觉得感染**cooties**是最糟糕的事。