Cancerous because their behavior and demeanor start to get easily modified by the status quo. Further, the diseased environment in which they live demands conformity and obedience. Not to conform and obey puts the cancer at grave risk of dying and becoming the odd-one-out. Nonetheless, if the cancer is not cut out, it will metastasize and destroy you as a single cell. Hence, you should know who belongs in your circle and who ought not to.
Use this post at your own peril or discretion.