When a choice of two is given and a decision is made between the two only for the choser to later realise they rejected something better than what they chose. Therefore New Clintonism is a choice made between two things which is later regretted.
"You chose to buy a Skoda over a BMW only for it to break down a week later? That's New Clintonism, man."
"You kept the baby and it turned out to be a pain in the ass? That's some major New Clintonism"