clock head man, turns into a white man and then becomes brown

A timid, nearsighted chemistry teacher discovers a magical potion that can transform him into a suave and handsome Romeo. The Jekyll and Hyde game works well enough until the concoction starts to wear off at the most embarrassing times.

When beautiful Carla Purty joins the university faculty, genetic professor Dr. Sherman Klump grows desperate to whittle his 400-pound frame down to size and win her heart. So, with one swig of his experimental fat-reducing serum, Sherman becomes 'Buddy Love', a fast-talking, pumped-up, plumped down Don Juan.

The hilarity begins when professor Sherman Klump finds romance with fellow DNA specialist, Denise Gaines, and discovers a brilliant formula that reverses aging. But Sherman's thin and obnoxious alter ego, Buddy Love, wants out...and a big piece of the action. And when Buddy gets loose, things get seriously nutty.

A white man's brain is transplanted into a black man's skull.

A man, dissatisfied with a white cube for a head, decides to give it up immediately for a fanciful one in the name of self-improvement, only to find himself unwillingly dealing with the consequence.

A racist insurance agent lives in a typical suburban neighborhood, but his bigoted world of taunting and harassing black people on and off the job is turned upside down when his skin inexplicably turns dark overnight.