DON'T TELL HER IT'S ME (1990)

Gus is a fat cartoonist that recently won a battle against cancer, which explains his baldness. But he is also lonely. Therefore, his caring sister tries to set him up with suitable woman. But to do so, she must turn him into an irresistible man. When he falls in love with Emily, Gus takes the identity of a mysterious biker from New Zealand.