Dumb-ass reality star of the day – last year’s Big Brother winner has confessed to using his $500,000 winnings to buy oxycodone pills for resale.

Adam Jasinski was arrested Saturday and charged with attempting to sell 2,000 pills in Massachusetts to a government witness.

This wasn’t Jasinski’s first attempt at selling drugs – he told a federal drug enforcement agent that he used his Big Brother prize to buy the oxycodone and had sold it along the East Coast over the past few months.

If convicted, Adam Jasinksi could get up to 20 years in prison and a $1 million fine.

In the video clip above, Adam was to give a chunk of it to help in the fight against autism.