发现中文网络上还没有对playground taunt的解释，各大英英词典（网上）也查不到。但有一个给予如下解释：

playground taunt:

An insult or phrase of the type that is traditionally used by children against one another; a childish verbal attack. 儿童常用来互相攻击的侮辱言辞；幼稚的言语攻击。

http://www.wordow.com/english/dictionary/playground%20taunt

例句：

1. “Hey, four-eyes!” That playground taunt is more accurate when applied to Anableps anableps—a fish related to the guppy.

2. But he then goes on to express the argument as a playground taunt: "a really really perfect thing would have to be better than a silly old imaginery thing. So I've proved that God exists. Nur Nurny Nur Nur."