Doctor Adventures: Fuck My Invisible Cock. Eva Angelina, Johnny Sins
The lab where Dr. Angelina works just made the breakthrough of a lifetime: an invisibility potion! Once Eva realized the mega fortune they had on their hands, she grabbed the test-tube and ran for it. That night, her boss Dr. Sins drank some potion and raced to her house to get it back. He found her lying in bed, her huge tits out as she rubbed down her clit. The first thing to re-appear was his fat cock, which Eva was only too happy to wrap her slutty lips around and suck the hell out of.