Jenelle Evans — “Teen Mom” and “16 And Pregnant”

"Teen Mom" "star" Jenelle Evans never even bothered hiding her drug use while the cameras rolled. Who can forget her mom Barbara yelling at her boyfriend Kieffer about "smoking reefer"? In October 2011, she pleaded guilty to drug charges, was required to do some community service and submit to monthly drug and alcohol testing. Did she do that? Of course not.