Turtle dick

A co-worker and I were talking about what kind of animals we had as pets when we were young. He said he had a sort of turtle, but that he felt "turtle" must not be the right name in English. It's not a 거북이, he insisted: this one is called 자라. So, naturally, we turned to Naver Dictionary for help. 

Here are the results:

Hmm. Learned a useful new phrase today: 자라자지, aka "turtle dick" refers to:

자라자지 

(작은) a shrivelled-up penis, an impotent penis, (팽대하는) a deceptively small penis

 The more you know.

(I sure hope he was referring to the terrapin...)