What do testicles look like in a baby sonogram?

I know, a jacked up question. However I am curious to find this out. My wife and I are expecting, we are currently in the 26th week. We have decided not to find out the sex; however lately I have become a little more curious. The last couple sonograms in my eyes have shown no definitive indication of sex. That being said, this last sonogram pic taken showed something that could be testicles, I don't know. My wife knows I've been paying more attention to the pictures. Any ideas or help is much appreciated. Thank you.