I’m a Rick Perry fan and I didn’t see it as a cheap shot, hell Rick Perry laughed at that one. You have to be able to laugh at yourself.
You don't know that, you only surmise it because you laughed at it. It clearly shows Rand's character and it's not pretty. He would 'joke' about you, also, if given the chance to make himself/'junior' senator look better against a seasoned governor.