Robin Thicke reportedly spends a fortune on pot

Robin Thicke has been suprizingly quiet during the performance, if you can call it that, between him and Miley Cyrus at Sunday's MTV Video Music Awards and some say we now know why.

The "Blurred Lines" singer, who has faced marijuana possession charges in the past, admitted to in a recent interview to spending aout $500,000 on pot over the years.  He called the drug his "crutch."