Uteruses, on the other hand, are the most powerful muscular organ in the human body."
"Thus, I posit that humans should no longer use the terms 'balls' to relate strength to an object or a person. From now on, humans should use the term 'uterus' to offer strength or courage to something. Here are some examples:
Man that car has got one hell of a uterus.
Stop being such a chicken--you need to grow a uterus.
That took uterus, man."
Read the entire post here.
Snagged from ericisrad.