It looks kind of innocuous yes? But it is so much more than the sum of it's meager parts. You must approach it carefully and coo it into submission. Once the beast is soothed, you gently mount the black disc. I find it best when you start at a squat and then gently stand up. Once you are standing you pat the pole, say a prayer (or an "Oh Shit" for us atheists) and lean to the side. Whammo! You're off. Gravity swings you around and hopefully some sort of muscle (stomach? back? leg?) will enable you to get the momentum and keep going around. Otherwise, you reach the halfway point and are flung back towards where you started and end up going only 180 of the 360 potential degrees. Even when you don't make it all the way around, it's great fun.
I find that a swing on the swing set is a great way to cool down afterward. Dogbert, however, disagreed. As Boo and I were swinging, she sat in the back seat of the car sending death rays our way.