Volere Volare (1991)

This is another Maurizio Nichetti film to go with "The Icicle Thief" and even nuttier.  The man is either a comic genius or seriously demented, and I'll opt for the former.  In this one he plays a man who dubs cartoons into Italian or rather just gathers weird sound effects for them (his brother and partner dubs porn flicks).  He becomes involved with a woman who provides fulfillment of fantasies, sexual and other, for a series of weird clients, but runs from the relationship when he finds himself changing into an animated cartoon.  You don't see that every day!