"I have two balls."

Translation: 저는 공이 두 개 있어요.

[Darren453252]

Inb4 the inevitable 'that's what she said' comments, 공 from my experience is only meant for ball as an object rather than the body part slang.
If anyone really wanted to know, 볼알 is balls as in the male organ.

[trevorist90]

Is that a loan word?