The proverbial "dog's balls"

I used to have this friend named April in Columbus. She was a super funny girl with some really funny sayings. My personal favorite is when something is really really good, you say it's the dog's balls. For example, "My grandma's cookies are the dog's balls." It makes me laugh like 5 years later.
Last Saturday my friends Dan and Bryan and I decided to go over to Olympic National Forest. We decided to take the ferry, and naturally, since it was Saturday of Labor Day weekend, there was a little wait in line to get on the ferry. Like an hour and a half. At one point, we were behind this car and there was this ginormous dog, like cattle sized. He was super cute, maybe a Great Dane? Well, he started getting frisky in the car, so the owner got out to take him for a walk. We were just hanging out, eating some peanut m&m's. That fuckin dog had the hugest big floppy dog balls I have ever seen in my life. I yelled with shock, "Holy shit! That dog has huge floppy balls!!!!" and my friend Dan almost narfed a peanut m&m. It was seriously the funniest shit ever. The owner and the dog went for a little walkie, and when they came back to the car, Dan had the camera all set up with fast clickie sports settings, and frantically tried to get a picture of the dog's balls so I could post them with this blog. Mostly we ended up with pictures of chubby redneck guy's butt instead of the dog's balls. Titties.